chapter 6 resource masters - mhschool 6 test, form 1 ... mathematics study notebooks. ... the...

Copyright © by The McGraw-Hill Companies, Inc. All rights reserved. Permission is granted to reproduce the material contained herein on the condition that such materials be reproduced only for classroom use; be provided to students, teachers, and families without charge; and be used solely in conjunction with the California Mathematics program. Any other reproduction, for sale or other use, is expressly prohibited.

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ISBN: 978-0-02-105805-1MHID: 0-02-105805-9

Printed in the United States of America.

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Teacher’s Guide to Using theChapter 6 Resource Masters ............................iv

Chapter ResourcesChapter 6 Graphic Organizer ............................ 2Chapter 6 Student Glossary .............................. 3Chapter 6 Anticipation Guide ............................ 4Chapter 6 Chapter Game .................................. 5

Lesson 6-1 Subtract Tens

Reteach ............................................................. 6Skills Practice .................................................... 7Homework Practice ........................................... 8Problem-Solving Practice .................................. 9Enrich .............................................................. 10

Lesson 6-2Count Back Tens and Ones

Reteach ........................................................... 11Skills Practice .................................................. 12Homework Practice ......................................... 13Problem-Solving Practice ................................ 14Enrich .............................................................. 15

Lesson 6-3 Regroup Tens as Ones


Lesson 6-4 Problem-Solving Strategy:

Write a Number Sentence

Reteach ........................................................... 21Skills Practice .................................................. 23Homework Practice ......................................... 24Enrich .............................................................. 25

Lesson 6-5 Subtract One-Digit Numbers

from Two-Digit Numbers


Lesson 6-6Subtract Two-Digit Numbers


Lesson 6-7 Check Subtraction


Lesson 6-8Problem-Solving Investigation:

Choose a Strategy

Reteach ........................................................... 41Skills Practice .................................................. 43Homework Practice ......................................... 44Enrich .............................................................. 45

Lesson 6-9 Estimate Differences


Chapter 6 AssessmentIndividual Progress Checklist .......................... 51Chapter 6 Diagnostic Test ............................... 52Chapter 6 Pretest ............................................ 53Chapter 6 Mid-Chapter Test ............................ 54Chapter 6 Vocabulary Test ............................. 55Chapter 6 Oral Assessment ............................ 56Chapter 6 Listening Assessment .................... 58Chapter 6 Project Rubric ................................. 60Chapter 6 Foldables Rubric ............................ 61Chapter 6 Test, Form 1 ................................... 62Chapter 6 Test, Form 2A ................................. 64Chapter 6 Test, Form 2B ................................. 66Chapter 6 Test, Form 2C ................................ 68Chapter 6 Test, Form 2D ................................ 70Cumulative Standardized Test Practice .......... 72

Answers ................................................. A1–A33

CONTENTSC

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Chapter ResourcesGraphic Organizer (page 2) This master is a tool designed to assist students with comprehension of grade-level concepts. You can use this graphic organizer in coordination with the appropriate lesson. While the content and layout of these tools vary, their goal is to assist students by providing a visual representation from which they can learn new concepts.

Student Glossary (page 3) This master is a study tool that presents the key vocabulary terms from the chapter. You may suggest that students highlight or star the terms they do not understand. Give this list to students before beginning Lesson 6-1. Remind them to add these pages to their mathematics study notebooks.

Anticipation Guide (page 4) This is a survey designed for use before beginning the chapter. You can use this survey to highlight what students may or may not know about the concepts in the chapter. If feasible, interview students in small groups, asking them the questions in the guide. There is space for recording how well students answer the questions before they complete the chapter. You may find it helpful to interview students a second time, after completing the chapter, to determine their progress.

Games (page 5) A game is provided to reinforce chapter concepts and may be used at appropriate times throughout the chapter.

Resources for LessonsReteach Each lesson has an associated Reteach worksheet. In general, the Reteach worksheet focuses on the same lesson content but uses a different approach, learning style, or modality than that used in the Student Edition. The Reteach worksheet closes with computational practice.

Skills Practice The Skills Practice worksheet for each lesson focuses on the computational aspect of the lesson. The Skills Practice worksheet may be helpful in providing additional practice of the skill taught in the lesson. It also contains word problems that cover the skill. Spaces for students’ answers are provided on the worksheet.

Homework Practice The Homework Practice worksheet provides an opportunity for additional computational practice. The Homework Practice worksheet includes word problems that address the skill taught in the lesson. Spaces for students’ answers are provided on the worksheet.

Problem-Solving Practice The Problem-Solving Practice worksheet presents additional reinforcement in solving word problems that applies both the concepts of the lesson and some review.

Enrich The Enrich worksheet presents activities that extend the concepts of the lesson or offer a historical or multicultural look at the lesson’s concepts. Some enrichment materials are designed to widen students’ perspectives on the mathematics they are learning.

Resources for Problem-Solving Lessons In recognition of the importance of problem-solving strategies, worksheets for problem-solving lessons follow a slightly different format. For problem-solving lessons, a two-page Reteach worksheet offers a complete model for choosing a strategy. For each Problem-Solving Strategy lesson, Reteach and Skills Practice worksheets offer reinforcement of the strategy taught in the lesson. In contrast, the Problem-Solving Investigation worksheets include a model strategy on the Reteach worksheets and provide problems requiring several alternate strategies on the practice worksheets.

Teacher’s Guide to Using the Chapter 6 Resource Masters

The Chapter 6 Resource Masters includes the core materials needed for Chapter 6. These materials include worksheets, extensions, and assessment options. The answers for these pages appear at the back of this booklet.

All of the materials found in this booklet are included for viewing and printing on the TeacherWorks Plus™ CD-ROM.

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Assessment OptionsThe assessment masters in the Chapter 6 Resource Masters offer a wide variety of assessment tools for monitoring progress as well as final assessment.

Individual Progress Checklist This checklist explains the chapter’s goals or objectives. Teachers can record whether a student’s mastery of each objective is beginning (B), developing (D), or mastered (M). The checklist includes space to record notes to parents as well as other pertinent observations.

Chapter Diagnostic Test This one-page test assesses students’ grasp of skills that are needed for success in the chapter.

Chapter Pretest This one-page quick check of the chapter’s concepts is useful for determining pacing. Performance on the pretest can help you determine which concepts can be covered quickly and which specific concepts may need additional time.

Mid-Chapter Test This one-page chapter test provides an option to assess the first half of the chapter. It includes both multiple-choice and free-response questions.

Vocabulary Test This one-page test focuses on chapter vocabulary. It is suitable for all students. It includes a list of vocabulary words and questions to assess students’ knowledge of the words.

Oral Assessment This two-page test consists of one page for teacher directions and questions and a second page for recording responses. Although this assessment is designed to be used with all students, the interview format focuses on assessing chapter content assimilated by ELL students. The variety of approaches includes solving problems using manipulatives as well as pencil and paper.

Listening Assessment This two-page assessment contains one page for teacher directions and one page for responses/recordings. This assessment, too, is suitable for all students but is designed primarily for use with students who may have difficulty reading test materials. The assessment directions progress in difficulty from simple at the beginning of the year to more extensive at the end of the year.

Chapter Project Rubric This one-page rubric is designed for use in assessing the chapter project. You may want to distribute copies of the rubric when you assign the project and use the rubric to record each student’s chapter project score.

Chapter Foldables Rubric This one-page rubric is designed to assess the chapter Foldable. It is written to the students, telling them what you will be looking for as you evaluate their completed Foldable.

Leveled Chapter Tests• Form 1 assesses basic chapter concepts

through multiple-choice questions and is designed for use with below-level students.

• Form 2A is designed for on-level students and is primarily for those who may have missed the Form 1 test. It may be used as a retest for students who received additional instruction following the Form 1 test.

• Form 2B is designed for students with a below-level command of the English language.

• Form 2C is a free-response test designed for on-level students.

• Form 2D is written for students with a below-level command of the English language.

Cumulative Standardized Test Practice This two-page test, aimed at on-level students, offers a page of multiple-choice questions and a page of free-response questions.

AnswersThe answers for the Anticipation Guide and Lesson Resources are provided as reduced pages with answers appearing in black. Full size line-up answer keys are provided for the Assessment Masters.

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Grade 2 2 Chapter 6

6 Graphic OrganizerMain Idea and 2 Details

A suggestion for how to complete this organizer can be found in the answer pages at the back of this book.

58 - 14 =

9 - 5 =

9 + 6 =

4 + 5 =

15 - 6 =

Addition Subtraction

44 + 14 =

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Grade 2 3 Chapter 6

6

count back On a number line, start at the number 5 and count back 3.5 - 3 = 2Count back 3.

difference The answer to a subtraction problem. 3 - 1 = 2The difference is 2.

estimate To find a number close to an exact amount.47 + 22 (rounds to 50 + 20)The estimate is 70.

inverse operation

Operations that undo each other.Addition and subtraction are inverse or opposite operations. Multiplication and division are also inverse operations.

ones A place value of a number. 23This number has 3 ones.

regroup To take apart a number to write it in a new way.1 ten + 2 ones becomes 12 ones.

round To change the value of a number to one that is easier to work with.24 rounded to the nearest ten is 20.

subtract (subtraction)

To take away, take apart, separate, or find the difference between two sets. The opposite of addition.5 - 3 = 2

tens A place value of a number.23The 2 is in the tens place.

The number has 2 tens.

Student GlossaryC

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Grade 2 4 Chapter 6

6

Directions: Before you begin Chapter 6, distribute these questions to the students. Read the questions to the students. Give them time to write their answers, or record the answers they provide. You may also want to ask the same questions after students complete the chapter to see if their perceptions on the subject matter have changed.

Before Chapter

After Chapter

1. Circle the one that is not an example of a subtraction strategy:

counting back regrouping using doubles estimation

2. Can you count back to solve 70 - 40?

3. Matt had 16 coins. He gave 6 to his sister. What could you do to find out how many coins he had left?

4. Subtraction and estimation are inverse operations. True or False?

5. Can you use addition to check subtraction?

6. What is 12 rounded to the nearest ten?

Anticipation GuideC

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PDF PASS CORRECTIONS

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Grade 2 5 Chapter 6

Ready

You will need:

18 index cards markers

31 - 18 =

13

32 - 19 =

13

Set

Write the following number sentences on the index cards, one per card.

32 - 16 =

30 - 8 =

31 - 18 =

66 - 26 =

25 - 3 =

32 - 19 =

25 - 9 =

46 - 9 =

36 - 27 =

53 - 36 =

42 - 5 =

41 - 14 =

58 - 18 =

63 - 7 =

30 - 21 =

52 - 35 =

65 - 9 =

47 - 20 =

GO!

1. Shuffle the cards. Deal them to the players.

2. Have players solve the subtraction problems on their cards.

3. Place the cards face down in 3 rows of 4 cards.

4. Have each player take turns turning over 2 cards. If the answers are the same, the player keeps the cards and gets a second turn. If the answers are not the same, the player replaces the cards.

5. Match all cards. The player with the most cards wins.

Chapter 6 Game Solve and Match

6

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Grade 2 6 Chapter 6

2MR3.0, 2NS2.3

You can use basic facts to help subtract tens.

5 - 2 = 3 helps you know that 50 - 20 = 30.

5 - 2 = 3

50 - 20 = 30

Solve.

1. 3 - 2 = 2. 30 - 20 =

3. 50 - 30 = 4. 40 - 10 =

5. 70 - 20 = 6. 60 - 30 =

7. 80 - 40 = 8. 90 - 10 =

Reteach

Subtract Tens

6-1

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2MR3.0, 2NS2.36-1

Skills Practice

Subtract Tens

Subtract tens.

1. 2.

5 tens - 1 ten = 4 tens 8 tens - 5 tens = tens

50 - 10 = 40 80 - 50 =

3. 4.

6 tens - 4 tens = tens 9 tens - 3 tens = tens

60 - 40 = 90 - 30 =

5. 6.

4 tens - 2 tens = tens 7 tens - 2 tens = tens

40 - 20 = 70 - 20 =

Solve.

7. What is 2 tens from 7 tens? - =


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Grade 2 8 Chapter 6

2MR3.0, 2NS2.3Homework Practice

Subtract Tens

Subtract tens.

1. 7 tens - 3 tens = tens 5 tens - 2 tens = tens 70 50

- 30 - 20

2. 80 90 40 90- 40 - 20 - 30 - 70

3. 80 40 80 70- 50 - 20 - 60 - 20

4. 50 70 60 90- 10 - 10 - 30 - 50

5. 90 70 80 50- 80 - 50 - 10 - 30

Solve.

6-1

6. Josie has 60 marbles. 30 of them are blue. The rest are red. How many red marbles does Josie have?

red marbles

7. Rich has 80 pennies. He spends 40 pennies. How many pennies does Rich have now?

pennies

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Grade 2 9 Chapter 6

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2MR3.0, 2NS2.36-1

Problem-Solving Practice

Subtract Tens

Solve.


2. What is 5 tens from 9 tens?

3. What is 1 ten from 3 tens? - =

4. What is 4 tens from 8 tens?

5. Dee had 20 tickets for the rides at the fair. She used 10 of them. How many tickets does she have left?

tickets

6. Larry had 60 baseball cards. He gave 20 cards to his brother. How many baseball cards does he have left?

baseball cards

7. Jill had 80 stickers. She gave 50 stickers to a friend. How many stickers does she have now?

stickers

8. Andy had 40 pennies. He spent 30 of them on a neat pencil. How many pennies does Andy have now?

pennies

9. Jane had 90 beads. She lost 40 of them. How many beads does Jane have now?

beads

10. Bill had 30 toy cars. He gave 10 cars to Sam and 10 cars to Joe. How many toy cars does Bill have left?

toy cars


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Grade 2 10 Chapter 6

2MR3.0, 2NS2.36-1

Enrich

Subtraction Stars

Solve. Look at the stars for help.

1.

5 6 7- 3 - 2 - 5

50 - 30 = 60 - 20 = 70 - 50 =

2.

6 3 9- 3 - 1 - 4

60 - 30 = 30 - 10 = 90 - 40 =

3.

4 8 7- 2 - 4 - 5

40 - 20 = 80 - 40 = 70 - 50 =

4. Color all the stars with answers of 2.


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2AF1.0

4 - 3 = ?

Count back by ones to subtract. 3, 2, 1, . . . 4 - 3 = 1

40 - 30 = ?

Count back by tens to subtract ten.

30, 20, 10 . . . 40 - 30 = 10

Subtract. Use the models for Exercises 1 and 2.

Write your answer.

Write the difference.

1. 46 - 4 = 2. 39 - 20 =

3. 77 - 40 = 4. 57 - 5 =

5. 53 - 20 = 6. 48 - 7 =

7. 65 - 40 = 8. 71 - 30 =

9. 37 - 4 = 10. 52 - 10 =

Reteach

Count Back Tens and Ones

6-2


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2AF1.0Skills Practice


Count back to subtract.

1. 28 64 36 52 45 - 5 - 30 - 4 - 10 - 2

2. 61 68 75 89 37- 40 - 2 - 50 - 20 - 3

3. 54 65 32 60 26 - 1 - 40 - 10 - 3 - 10

4. 70 45 72 55 82- 30 - 20 - 2 - 4 - 60

Solve.

5. Lauren has 50 pennies in her pocket. She spends 20 of them. How many pennies does she have left? pennies

6. Alex has 67 pennies. He spends three pennies. How many pennies does he have left? pennies



6-2

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2AF1.06-2

Homework Practice


Count back to subtract.

1. 85 38 57 42 97- 30 - 6 - 20 - 20 - 4

2. 74 37 86 27 79- 50 - 30 - 2 - 6 - 40

3. 53 68 43 83 34- 10 - 5 - 30 - 50 - 3

4. 22 57 68 75 89- 2 - 20 - 50 - 2 - 40

Solve.

5. Mandy had 25 pennies. She lost two pennies in the grass. How much money does she have left?

pennies

6. Vernon had 38 apples. He gave 20 to his friends. How many apples did he have left? apples




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2AF1.06-2



Solve.

1. June has 14 baseball cards. She gives two to a friend. How many cards are left?

cards

2. Donald has 56 grapes. He eats five of them. How many grapes does he have left?

grapes

3. Billy has 24 marbles. He loses three of them. How many marbles does he have left?

marbles

4. Tricia has 18 stamps. She gives ten to her sister. How many stamps are left?

stamps

5. Dr. Miller has 79 patients in one week. 30 are children. The rest are adults. How many adults does Dr. Miller see?

adults

6. Tanya collects 185 cans. She crushes 50 cans. How many cans does she have left to crush?

cans


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2AF1.0Enrich

Counting back tens to subtract

80 70 60 50 40 30 20 10 090

Fill in the missing numbers

1. 50 40 30 20 2. 40

50 - 30 = 40 - 30 =

3. 90 4. 40

90 - 40 = 40 - 20 =

5. 60

60 - 40 =

6. 80

80 - 50 =

6-2


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2AF1.0, 2MR1.2

Candy had 32 markers. She gives six to Ray. How many markers does she have left?

32 - 6 = ?

To help solve this problem, you can regroup one

box of markers as ten markers.

=

Now there are enough markers. Subtract.

32 - 6 = . Candy has 26 markers left.

Write the number sentences. Use .

Regroup if needed. Then solve.

1. Jim had 52 posters. He sold 18 of them. How many posters does he have now?

- =

2. Ellen had 34 crayons. She gives 5 to her friends. How many does she have left?

- =

3. John had 41 pennies. He spent 15 of them. How many pennies does he have now?

- =

Reteach

Regroup Tens as Ones

6-3


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2AF1.0, 2MR1.26-3

Skills Practice


Use WorkMat 6 and to subtract.

Do you need more ones to subtract?


1. 32 - 5 no yes 32 - 5 =

2. 27 - 8 no yes 27 - 8 =

3. 28 - 5 no yes 28 - 5 =

4. 55 - 7 no yes 55 - 7 =

5. 41 - 6 no yes 41 - 6 =

6. 36 - 9 no yes 36 - 9 =

Solve.

7. Brian has 42 trading cards. He gives seven to a friend. How many trading cards does Brian have left?

trading cards

8. Sam has 33 cents. He spends 15 at the store. How much money does he have left?

cents


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2AF1.0, 2MR1.2Homework Practice


Subtract.

Do you need more ones to subtract?


1. 54 - 6 no yes 54 - 6 =

2. 32 - 7 no yes 32 - 7 =

3. 82 - 8 no yes 82 - 8 =

4. 47 - 5 no yes 47 - 5 =

5. 63 - 6 no yes 63 - 6 =

6. 91 - 3 no yes 91 - 3 =

Solve.

7. Sam picks 41 plums. He eats three for his snack. How many plums are left?

plums

8. Mr. White is 54 years old. Mr. Martin is 7 years younger than Mr. White. How old is Mr. Martin?

years old

6-3


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Preparation: Base-ten blocks are needed for this activity.

Solve. Use blocks or the tens and ones workmat

for help.

1. Melissa makes 14 cards. She gives 7 to her friends.

How many cards are left?

cards

2. Joe has 53 coins. He gives 8 to his mom.

How many coins does he have left?

coins

3. Fran has a lemonade stand with 81 glasses of lemonade. She sells 9 of them.

How many glasses are left?

glasses

4. Vicki has 22 barrettes. She loses 4.

How many are left?

barrettes

5. Main Street Store has 38 coats. Nine are sold.

How many coats are left to sell?

coats

6. Andy had 44 CDs. He broke 5 of them. Then he sold nine to his friends.

How many CDs does he have now?

CDs


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Trading Tens

Draw dimes to show tens and pennies to show

ones. Write the numbers.

Draw Regroup

3 tens 6 ones

Write the number

2 tens 16 ones

Write the number

Draw Regroup

4 tens 5 ones

Write the number

3 tens 15 ones

Write the number

Draw Regroup

2 tens

Write the number

1 ten 10 ones

Write the number


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There are eight bats in a tower. Three more join them. How many bats are now in the tower?

Reteach (1)

Problem-Solving Strategy: Write a Number Sentence

6-4

What do I know?

There are eight bats.Three more join them.

What do I need to find out?

How many bats there are now.

Understand

Step 1

Plan

Step 2

Solve

Step 3 Write an addition sentence.

8 + 3 = 11 bats

How will I find out how many bats

there are in all?

I know the number of bats in the tower.I know the number of bats that join them.A number sentence would tell me how many there are.I would subtract if some bats left the tower. But no bats left the tower.I will write a number sentence and .

Check

Step 4 What were the two groups in my addition sentence?Did my answer tell how many bats there are in all?


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Write a number sentence to solve.

6-4

1. Spot has 13 bones in his doghouse. He found four more in the yard. How many bones does Spot have?

bones

2. Lu sees 17 rabbits in a field. She sees six more in the woods.

How many rabbits does she see in all?

rabbits

3. Twenty-one monkeys are in the tree. Five monkeys swing away. How many monkeys are left?

monkeys

4. Thirteen crows are in a cornfield. Six fly away. How many crows are left?

crows

5. Kay finds six shells. Then she finds nine more. How many shells did she find in all?

shells

6. Joey catches 18 fish. His family keeps four of them. How many fish did they let go?

fish


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Skills Practice



1. Seven kids are in the sandbox. Six more are on the swings. How many kids are there in all?

kids

2. Erica colors 15 pictures. She gives 11 to her family. How many pictures are left?

pictures

3. Ben ran 11 miles. Jeff ran 5 miles. How many more miles did Ben run?

miles

4. Roland mows lawns. He made 22 dollars the first week. He made 7 dollars the next. How much money did he make?

dollars

5. Nine chickens are eating. Fourteen more chickens join them. How many chickens are eating now?

chickens

6. Jesse buys 16 game cards. He gives 4 to his friends. How many cards does Jesse have left?

cards


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Homework Practice



1. The store has 15 sandwiches. Six are sold. How many sandwiches are left to sell?

sandwiches

2. Timmy the turtle moves 14 inches. Then he moves three inches. How many inches did he move in all?

inches

3. There are 12 pinecones in the tree. Two fall off. How many pinecones are left on the tree?

pinecones

4. There are nine gophers in the garden. There are ten more in the yard. How many gophers are there?

gophers

5. Gary makes 16 hot dogs. He sells 11. How many hot dogs are left?

hot dogs

6. There are 11 kites in the sky. There are two more in the tree.

How many kites are there in all?

kites


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Target Number

Subtract the numbers next to each other. Write the number

sentences with a difference of 26. Can you find all six?

The target number is 26.

71 78 52 15

75 49 96 79

42 63 37 53

16 37 41 15

Write the subtraction problems on the lines.

6-4


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Find 42 - 8.

tens ones

Show 42. Can you subtract 8 ones? Regroup 1 ten as 10 ones. Now there are 3 tens and

12 ones.


1. tens ones

5 3 - 9

2. tens ones

3 4 - 6

3. tens ones

4 7 - 8

4. 25 5. 81 6. 54 - 7 - 8 - 9

7. 62 8. 76 9. 33 - 3 - 4 - 6

Reteach

Subtract One-Digit Numbers from Two-Digit Numbers

6-5

3 12

4 2 - 8


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Skills Practice



1. tens ones

1 13 2 3

- 9

1 4

tens ones

3 6- 9

tens ones

4 1 - 5

tens ones

5 8- 6

2. tens ones

4 6- 7

tens ones

5 2- 6

tens ones

3 7- 9

tens ones

6 5 - 8

3. Gary has 72 cents. He spends eight cents. How much does he have now?

cents

4. There are 55 mice in the barn. A cat chases nine of them away. How many mice are left?

mice


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Subtract.

1. tens ones

5 5- 7

tens ones

8 3- 5

tens ones

3 6- 9

tens ones

9 0- 8

2. tens ones

4 3- 1

tens ones

6 2- 8

tens ones

7 8- 9

tens ones

9 1- 4

6-5

3. There are 23 children playing outside. 7 go inside. How many are left outside?

children

4. Karen has 35 grapes. She gives eight to her friends. How many grapes are left?

grapes


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Solve.

1. Juan has 15 crackers. He eats 4. How many are left?

crackers

2. Rita has 22 stickers. She gives five to Paul. How many stickers are left?

stickers

3. Julia has 24 cards. She trades six cards for a book. How many cards does she have left?

cards

4. Lisa has 18 raisins. She eats 6. How many are left?

raisins

5. Jessie has 34 marbles. He loses seven of them. How many does he have now?

marbles

6. There are 82 balls in the gym. Sam puts nine away. How many balls are still in the gym?

balls


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Check to Regroup

Look at each problem. If you need to regroup put

a check mark in the box. If you do not need to

regroup put an X in the box.

1. 34 - 8 regroup 2. 39 - 8 regroup

3. 46 - 7 regroup 4. 32 - 8 regroup

5. 50 - 36 regroup 6. 27 - 15 regroup

7. 61 - 33 regroup 8. 52 - 29 regroup

9. 35 - 14 regroup 10. 73 - 52 regroup

11. 24 - 16 regroup 12. 41 - 25 regroup

13. 82 - 39 regroup 14. 70 - 18 regroup

15. 43 - 38 regroup 16. 66 - 45 regroup


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Find 36 - 17.

tens ones

Show 36. Can you subtract 7 ones? Regroup 1 ten as 10 ones. Now there are 2 tens and

16 ones.


1. tens ones

8 0 - 3 6

2. tens ones

6 5 - 2 7

3. tens ones

4 7 - 1 9

4. 29 5. 41 6. 63 - 15 - 18 - 38

7. 76 8. 54 9. 32 - 49 - 25 - 16

Reteach

Subtract Two-Digit Numbers

6-6

2 16

3 6 - 1 7


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1. tens ones

4 15 5 5

- 1 7

3 8

tens ones

4 5 - 1 2

tens ones

3 1 - 7

tens ones

6 2 - 1 8

2. tens ones

4 5 - 2 9

tens ones

2 8 - 1 2

tens ones

5 6 - 2 7

tens ones

7 4 - 7 0

6-6

3. Phoebe makes 52 cookies for the bake sale. She sells 36 of them. How many cookies are leftover?

cookies

4. There are 41 pumpkins in the field. The farmer sold 17 of them. How many pumpkins are left?

pumpkins


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2AF1.0, 2NS2.06-6

Homework Practice


Subtract.

1. tens ones

4 3 - 2 5

tens ones

6 7 - 2 8

tens ones

3 5 - 1 9

2. tens ones

4 8 - 3 7

tens ones

8 2 - 5 6

tens ones

5 6 - 2 8

3. Tom did his chores in 38 minutes. Linda did her chores in 29 minutes. How many more minutes did it take Tom to do his chores?

minutes

4. There were 75 straws in the lunchroom. Kids used 27 of them at lunchtime. How many straws were left?

straws

5. Main Street Store has 71 comic books. Five of them are sold. How many comic books are there now?

comic books

6. There are 25 students in Miss Fuentes’s second grade. There are six students absent today. How many students are there in class today?

students


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Solve.

1. Ray has 56 comics. He gives 13 away. How many are left?

comics

2. Jake collects 62 game cards. He gives 48 to a friend. How many cards does Jake have left?

cards

3. Vera has 21 stamps. Meg has nine stamps. How many more stamps does Vera have?

more stamps

4. Robbie Rabbit dug up 37 carrots. He ate 33. How many are left?

carrots

5. There are 31 days in August. There are 28 days in February. How many more days are there in August?

more days

6. John has 15 points. Ella has six points. Felix has eight points. How many more points does John have than Ella?

more points


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Follow the Flow Chart

Color the shapes green if you had to regroup to find the answer.

57- 49

53- 27

44- 22

55- 45

92 - 41

65- 17

43- 38

51- 18

56- 28

31- 16

75

- 50

64- 19

6-6


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Find 32 - 14.

tens ones

2 12

3 2 - 1 4

1 8

Is this answer correct? check by adding.

Subtract. Then check by adding.

1. 16 11 2. 53

- 5 + 5 - 18 + 18

11 16

3. 93 4. 46

- 38 + 38 - 23 + 23

5. 84 6. 75

- 57 + 57 - 49 + 49

Reteach

Check Subtraction

6-7

1

18 + 14

32


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2NS2.1, 2MR2.26-7

Skills Practice

Check Subtraction


1. 65 44 37 43

- 21 + 21 - 14 + - 25 +

44 65

2. 71 54 81

- 7 + - 36 + - 34 +

3. 95 63 48

- 23 + - 9 + - 19 +

Solve. Check by adding.

4. Students in Mr. Frank’s class made 10 pictures. They showed 6 at the art fair. How many were not shown?

pictures

5. Mr. Levine is 53 years old. Mr. Smith is 37 years old. How much older is Mr. Levine?

years older


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2NS2.1, 2MR2.2Homework Practice

Check Subtraction


1. 37 67 52

- 15 + - 48 + - 36 +

2. 48 73 82

- 18 + - 7 + - 68 +

3. 91 35 77

- 45 + - 17 + - 41 +


6-7

4. There are 46 girls skating. There are 67 boys skating. How many more boys than girls are skating?

more boys

5. Randy checks out 20 books from the library. He returns 12. How many books does Randy still have?

books


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Check Subtraction


1. Cole has 9 stickers. He gave 2 to a friend. How many stickers does Cole have now?

stickers

2. Nan’s Bike Shop fixed 37 bikes in a week. Ben’s Bikes fixed 14. How many more bikes were fixed at Nan’s?

bikes

3. There are 95 cats at the shelter. 28 cats are adopted. How many cats are still at the shelter?

cats

4. The hen lays 8 eggs. The farmer takes 3. How many are left?

eggs

5. Ima picks 48 apples. She sells 17 of them. How many apples are left?

apples

6. Marvin plants 66 flowers. Roy plants 81 flowers. How many more flowers did Roy plant?

more flowers


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Turn Subtraction Upside Down

Here is a chart. It shows how many math club members attended meetings.

September October November December January February March

44 30 37 25 41 32 20

Solve. Add to check your answers.

1. How many more members attended in November than in February?

37 - 32 + 32

37

2. How many more members attended in September than in October?

44 - 30 + 30

44

3. How many more members attended in January than in March?

41 - 20 + 20

41


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2MR1.1, 2AF1.0

Mildred Mouse counted 18 holes in one piece of cheese. She counted 31 holes in the other piece of cheese. How many holes are there in all?

Reteach (1)

Problem-Solving Investigation: Choose a Strategy

6-8

What do I know?

There are 18 holes in one piece of cheese.There are 31 holes in the other piece of cheese.

What do I need to find out?

How many holes are there?

Understand

Step 1

Plan

Step 2

Solve

Step 3 Use a model.

There are holes.

How will I find out?

I can draw a picture to find out how many holes there are. But that would take a long time.

I can write a number sentence. But it might be easier to use a model.

I can use a model.

Check

Step 4 Does my model show how many holes there are?Can I use my model to check my work?


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2MR1.1, 2AF1.0Reteach (2)


• Write a number sentence.• Draw a picture.• Use a model.

Choose a strategy and solve.

1. 55 girls and 36 boys play volleyball. How many more girls than boys play volleyball?

more girls

2. There are 48 cows in the field. There are 23 in the barn. How many cows are there?

cows

Use the chart for Exercises 3 and 4.

Swimmer Number of Laps

Dan 22Sandy 18Alan 45

3. During swimming practice, how many laps did Dan and Sandy swim?

laps

4. How many more laps did Alan swim than Sandy?

more laps

6-8


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2MR1.1, 2AF1.06-8

Skills Practice




1. There are 18 frogs in the pond. There are five frogs in the grass. How many frogs are there?

frogs

2. Together, Jamie and Alex picked 72 berries. Jamie picked 32. How many did Alex pick?

berries

3. There are 10 boys and 17 girls at the mall. How many kids are there?

kids

4. Ian has five sets of 10 crayons. He gives three crayons from each set to his brother. How many crayons does Ian have left?

crayons


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Homework Practice




1. Todd eats 12 crackers. Then he eats 6 more. How many crackers did he eat?

crackers

2. Ms. Allen paints 19 pictures of the prairie. She paints 37 pictures of her parrot. How many more pictures of her parrot did she paint?

more pictures of her parrot

3. Mary brings four cents to school. She finds five more in her desk. Then a friend gives her 13 cents. How much does Mary have now?

cents

4. Mr. Drew teaches reading. He read 3 stories to his students in the first week. He read 2 stories the next week. He read 4 stories the week after that. How many stories has he read so far?

stories


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Who is the Winner?

Adams School had a math contest. Use the clues to find who won first, second, and third place.

The winner solved 20 problems correctly.

Shannon solved 16 problems correctly.

Ron solved more problems than Shannon.

Chad was not the winner.

One student solved 18 problems correctly.

Write the names of the winners on the ribbons.

1

2

3

, ,

6-8


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In the problem below, you need to know about

how many peanuts are left. You need to make

a good guess. A guess is also called an

estimate. You can estimate when you do not

need an exact answer.

There are 18 peanuts in the pile. Edna theelephant eats 9 of them. About how manypeanuts are left?

Step 1: Round each number to the nearest ten.

The number 9 is close to 10. The number 18 is close to 20.9 rounds to 10. 18 rounds to 20.

Step 2: Subtract the rounded numbers to find your estimate.

18 - 9 is about the same as 20 - 10. 20 - 10 = 10 ?18 - 9 is about .

Round these numbers to the nearest ten and

estimate the difference.

1. 47 → 50 2. 42 → - 31 → - 30 - 33 → -

3. 39 → 4. 47 → - 32 → - - 38 → -

Reteach

Estimate Differences

6-9


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2NS2.0, 2NS2.36-9

Skills Practice


Round each number to the nearest ten. Estimate

the difference.

Round up if the number has 5, 6, 7, 8, or 9 ones.15 rounds up to 20.

Round down if the number has 4, 3, 2, or 1 ones.14 rounds down to 10.

1. 49 - 31 50 2. 66 - 27

- 30 -

20

3. 77 - 31 4. 39 - 31

- -

5. 48 - 32 6. 89 - 11

- -

Solve.

7. Sharon spent 33 cents at the carnival. Her brother spent 19 cents. About how much more did Sharon spend?

cents

8. Morgan has 32 music CDs. He gives 13 to his brother. About how many music CDs does Morgan have left?

CDs


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2NS2.0, 2NS2.3Homework Practice


Round each number to the nearest ten.

Estimate the difference.

1. 74 - 16 2. 54 - 17

- -

3. 76 - 27 4. 38 - 29

- -

5. 64 - 16 6. 63 - 21

- -

Solve.

6-9

7. A farmer has 72 apples. She sells 39 of them. About how many apples are left?

apples

8. Ray’s Bookstore has 92 books about cars. Over a year, 26 books are sold. About how many books on cars are still at the store?

books


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2NS2.0, 2NS2.36-9



Solve.

1. Janet has 21 cents. She spends 9. About how much is left?

cents

2. Kim has 54 marbles. 19 of them are red. The rest are blue. About how many marbles are blue?

marbles

3. Mr. Tam’s Shop had 91 cans of juice. The store sold 75 in a week. About how many cans of juice are still for sale?

cans of juice

4. Tim has 12 pencils. He gives 1 to a friend. About how many are left?

pencils

5. Erin collects 88 cans. She crushes 59 of them. About how many cans are left to crush?

cans

6. Peter is 50 inches tall. His younger sister is 19 inches shorter than Peter. About how tall is Peter’s sister?

inches


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Does the answer make sense?

Estimate and round to answer the problems.

1. Ramon likes to collect rocks. He has 72 rocks in his collection. He gives 33 rocks away. Now he thinks he has about 50 rocks.Is he right? 72 rounds to and 33 rounds to .

Ramon has about rocks.

2. Sid uses shells in art. He has 45 big and small shells. He has 26 small shells, so he thinks he has about 30 large shells.Is he right? 45 rounds to and 26 rounds to .

Sid has about shells.

3. Elaine buys postcards from all around the world. She has 36. She wants to share them with her brother. She gives him 18 of her cards. She thinks she will have about 20 cards left.Is she right? 36 rounds to and 18 rounds to .

Elaine has about cards.

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Mastery Level Learning Goals Comments

B D M Lesson

6-1 Use mental math and basic facts to subtract tens.

6-2 Count back by tens and ones to subtract.

6-3 Understand numbers with and without regrouping.

6-4 Write a number sentence.6-5 Subtract a one-digit number

from a two-digit number with and without regrouping.

6-6 Subtract two-digit numbers with and without regrouping.

6-7 Check subtraction by using addition.

6-8 Choose a strategy.6-9 Estimate differences by

rounding to the nearest ten.

B = Beginning; D = Developing; M = Mastered

Note to Parents

Individual Progress Checklist6

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Diagnostic Test

Are you ready for Chapter 6?

Write your answer.

1. How many tens are in 40?



Use the number lines. Round to the nearest ten.

4. 29 17 21

5. 15 42 43

6. 36 48 34

Subtract.

7. 9 - 4 = 9 - 3 =

8. 6 - 2 = 7 - 5 =

9. 8 - 6 = 7 - 6 =

Solve.

10. Adela has 12 animal stickers. If she gives 5 to Joe, how many stickers will she have left?

stickers

6


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Chapter Pretest

Subtract. [Lessons 6.1, 6.1, 6.2, 6.2, 6.6, and 6.6]

1. 50 2. 70 3. 18- 40 - 40 - 2

4. 64 5. 24 6. 57- 50 - 15 - 14

Subtract. Regroup if you need to. [Lessons 6.3 and 6.5]

7. 33 8. 75 9. 41- 7 - 4 - 8

Subtract. Check by adding. Show your

work. [Lessons 6.5, 6.6, and 6.7]

10. 18 - 7 =

11. 52 - 39 =

Round each number to the nearest ten.

Estimate the difference. [Lesson 6.9]

12. 31 - 19 - =

13. 75 - 29 - =

6


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Mid-Chapter Test

Subtract. Regroup if you need to. [Lesson 6.3]

1. 32 2. 55- 8 - 9


3. Jackie buys two goldfish at the store. She has six more at home. How many goldfish does she have in all? [Lesson 6.4]

goldfish

4. Brian’s Deli had 29 pickles. They sold 13 for lunch. How many pickles are left to sell? [Lesson 6.4]

pickles

Subtract. Fill in the circle for the correct answer.

[Lesson 6.1 and 6.2]

6

5. 80 - 20 = ?

100

60

40

50

6. 78 - 20 = ?

50

98

76

58


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Vocabulary Test

Write the correct word in the blank. Use the words

from the box.

estimateinverse operationsdifferencecount back

subtractregroupround

1. To means to take away or find the difference.

2. To count 5, 4, 3 means to .

3. If you 12 ones, you can make 1 ten and 2 ones.

4. Addition and subtraction are opposites, so they are called

.

5. You can if you do not need an exact number.

6. When you , you can change 34 to 30 to make your math easier.

7. The is the answer to a subtraction problem.

6


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Oral Assessment

Preparation: Base-ten cubes are necessary for this assessment.

Directions: This test targets those students who have developing verbal skills—both oral and written. Provide base-ten blocks for the students to use during the assessment. Ask the questions below and have students record their answers, or record the answers they supply.

1. Ask: What is 40 minus 20?


3. Ask: What is 25 minus three?

4. Ask: What is 22 minus nine?

5. Ask: What is 45 minus two?



8. Ask: Are you sure your answer is correct? Use addition to check your answer.

9. Ask: About how much is 61 minus 39? Round your answer to the nearest tenth.

10. Say: Julie has four apples. Sean buys two of them. Write a number sentence to show how many apples are left.

Notes and comments

6


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Oral Assessment Response Sheet

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

6


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Listening Assessment

Preparation: Base-ten cubes are necessary for this assessment.

Directions: Ask students to perform the following tasks.

1. Write 6 m inus 4 equals 2 on your sheet.Under the number sentence, write the difference of 60 minus 40. Use the number sentence to help you.

Use addition to check your answer. Write the addition problem on your sheet.

2. Write 32 minus 7 on your sheet.Use cubes to find the difference.Write the difference on your sheet.

3. Write 26 minus 18 on your sheet. Use cubes to find the difference. Write the difference on your sheet.

4. Write 39 minus 18 on your sheet.Estimate the difference. Use the number line to help. Write your answer on your sheet. Find the difference of 39 minus 18 to see if your answer is reasonable. Use counting cubes to help.

5. Paul has 10 markers. He gives five to his friends. How many markers does Paul have left? Write the answer. Use cubes if you want to. Write a number sentence that shows how many markers Paul has left. Now draw a picture that shows how many markers Paul has left.

Notes and comments

6


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1.

2.

3.

4. 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

5.

Listening Assessment Response Sheet6


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6Chapter Project Rubric

Score Explanation

3 Student successfully taught a lesson review to the class regarding a chapter concept. Student used an effective mix of manipulatives, visuals, posters, and props to convey the message. The review lesson was well planned, practiced, and smooth.

2 Student successfully taught a lesson review to the class regarding a chapter concept. Student used some mix of manipulatives, visuals, posters, and props to convey the message. The lesson could have been smoother.

1 Student taught a lesson review to the class regarding a chapter concept. Student barely used visual aides. Student did relate some important concepts, but the presentation came across as unpracticed and rough.

0 Student did not successfully teach a review lesson. The lesson was either incomplete or incorrect. The student did not use visual aides, and did not relate the important chapter concepts.


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Chapter Foldables Rubric

Score Explanation

3 Student successfully made, labeled, and used Foldable to record information on more complicated subtraction strategies. Student used multiple subtraction strategies, including “mental math,” “basic facts,” “count back by tens,” “regrouping,” and “estimation.” Student successfully demonstrated more complicated subtraction problems, including subtracting a 1-digit number from a 2-digit number, and subtracting with two 2-digit numbers.

2 Student successfully made, labeled, and used the Foldables to record information on more complicated subtraction strategies. Student used different subtraction strategies, and began to solve more difficult subtraction problems.

1 Student successfully made, labeled, and used the Foldables to record information on more complicated subtraction strategies. Student used more than 1 subtraction strategy.

0 Student did not successfully construct or use the chapter Foldables. Student did not comprehend and use multiple subtraction strategies. Student was unable to process more complicated subtraction problems, including subtracting 1-digit numbers from 2-digit numbers.

6


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Chapter Test, Form 1

1. 80 - 30

110

20

50

40

6

3. 55- 30

85

35

45

25

2. 48 - 5

45

43

53

98

4. 23 - 7

19

16

30

20


[Lessons 6.1, 6.2, 6.2, 6.3, 6.5, and 6.6]

5. 31 - 6

25

35

13

37

6. 64- 58

10

122

6

2

GO ON


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Chapter Test, Form 1 (continued)

Fill in the circle for the correct answer.

6

7. Your number sentence is 39 - 12 = 27. Which problem would you use to check your subtraction? [Lesson 6.7]

27 + 39

27 + 12

39 - 27

12 + 39

8. About how much is 52 - 13? Round to the nearest ten. [Lesson 6.9]

60

30

38

40


0

1

40

10

10. There are 28 flowers in the meadow. There are 17 in the garden. How many flowers are there in all? [Lesson 6.8]

50

11

45

48

STOP


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Chapter Test, Form 2A


[Lessons 6.3, 6.5, 6.2, 6.1, 6.6, and 6.2]

6

2. 15 - 3

10

12

8

18

1. 31 - 4

35

27

50

25

4. 50- 30

80

15

30

20

3. 49- 30

19

46

15

79

6. 48- 20

28

68

46

25

GO ON

5. 49- 25

25

24

74

37


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Chapter Test, Form 2A (continued)


6

7. There are 19 peaches in the basket. Mr. Keel buys nine of them. How many peaches are still in the basket? [Lesson 6.8]

10

12

28

30

9. Your number sentence is 52 - 19 = 33. Which problem would you use to check your subtraction? [Lesson 6.7]

33 - 19

33 + 52

33 + 19

19 + 52

8. Eric has 14 baseball cards. He buys six more. What could you do to find out how many cards Eric has? [Lesson 6.4]

subtract

estimate the difference

write a number sentence

find a pattern


0

1

40

10

STOP

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Chapter Test, Form 2B


[Lessons 6.1, 6.2, 6.2, 6.3, 6.5, and 6.6]

6

1. 30- 20

10

20

50

2. 22 - 2

24

20

21

3. 45- 20

42

25

65

4. 25 - 6

19

21

31

5. 18 - 6

24

11

12

6. 32- 17

49

12

15

GO ON


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Chapter Test, Form 2B (continued)

7. 25 - 15 = 10. Which would you use to check? [Lesson 6.7]

25 + 8

15 - 10

10 + 15


33

10

11


10

72

22

10. There are 6 trees in the school yard.There are 4 trees at home. How many trees are there in all? [Lesson 6.8]

2

8

10


11. Tom has 2 dogs. Ann has 2 dogs. How could you find how many total dogs there are? [Lesson 6.4]

estimate the difference

write a number sentence

regroup STOP


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Chapter Test, Form 2C

Subtract. [Lessons 6.2, 6.5, 6.6, 6.1, 6.3, 6.2, 6.6, and 6.6]

1. 69 2. 38- 30 - 5

3. 74 4. 60- 21 - 50

5. 52 6. 36- 38 - 9

7. 49 8. 82- 33 - 27

GO ON

6


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Chapter Test, Form 2C (continued)

Subtract.

9. 51- 36

Check by adding. [Lesson 6.7]


11. Ron and his dad played 18 games of checkers in a month. Ron won 12 games. How many games did his dad win? [Lesson 6.8]


13. There were 13 treats in the box. The puppy ate seven of them. How many treats are left in the box? Write a number sentence to solve. [Lesson 6.4]

STOP

6


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Chapter Test, Form 2D

Subtract. [Lessons 6.5, 6.2, 6.6, 6.3, 6.1, 6.2, 6.5, and 6.2]

1. 26 2. 39 - 2 - 5

3. 57 4. 33- 41 - 19

5. 70 6. 88- 20 - 40

7. 16 8. 58 - 9 - 20

GO ON

6


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Chapter Test, Form 2D (continued)6

Estimate the difference.

Round to the nearest ten. [Lesson 6.9]

9. About how much is 39 - 11?

Round to the nearest ten.

10. About how much is 19 - 11?

Round to the nearest ten.

Solve.

11. There are 5 dogs at the pet store. There are 15 dogs at the shelter. How many total dogs are there? [Lesson 6.8]

dogs


12. Pat’s mom buys 7 apples. Pat eats 2. How many apples are there now? [Lesson 6.4]

Subtract. Check by adding. [Lesson 6.7]

13. 35- 19

STOP


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Cumulative Standardized Test Practice

Write the numbers in order from least to greatest.

1. 56, 7, 42, 39, 24 [Lesson 1.6]

Complete the fact family.

2. 14 + 5 = 19 - = 14

5 + 14 = [Lesson 3.7] - 14 = 5

Add or subtract to solve. [Lesson 5.4, 6.6, 2.7, 3.2, 3.2, and 5.6]

3. 26 4. 34 + 7 - 12

5. 4 6. 14 6 - 14 + 3

7. 11 8. 29+ 11 + 15

GO ON

6


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Cumulative Standardized Test Practice

(continued)

Look at the graph. Fill in the circle for the

correct answer.

Number of Animals in Garden

toads

rabbits

worms

6

9. What animal has the most? [Lesson 4.2]

toads

rabbits

worms

dogs

10. How many rabbits are there? [Lesson 4.2]

6

4

8

18

11. 19 - 13 = 6. Which addition problem could you use to check? [Lesson 6.7]

6 + 13

13 + 19

13 - 6

6 + 19


20

24

50

30 STOP


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Grade 2 A1 Chapter 6

Answers (Graphic Organizer and Anticipation Guide)

An

swer

s

Nam

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de 2

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C

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6 Dir

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or

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Ch

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yes

2.

Can

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cou

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back

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solv

e 70

- 4

0?

An

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sw

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vary

.

3. M

att

had

16

coin

s. H

e ga

ve 6

to

his

sis

ter.

Wh

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fals

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oper

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T

rue

or F

alse

?

yes

5.

Can

you

use

add

itio

n t

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eck

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ract

ion

?

10

6. W

hat

is

12 r

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uide

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Mai

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Det

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pag

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58-

14 =

44 5

8

9-

5 =

49

9+

6 =

4+

5 =

15-

6 =

9 1

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Ad

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Not

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bet

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15 –

6 =

9

9 +

6 =

15

4 +

5 =

9

44 +

14

= 5

8

15 –

6 =

9

9 –

5 =

4

58 –

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= 4

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nc.

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Answers (Lesson 6-1)

pygp

Chapter Resources

Gra

de 2

7

Cha

pter

6

Nam

e

2M

R3

.0,

2N

S2

.36

-1S

kil

ls P

rac

tic

e

Sub

trac

t Ten

s

Su

btr

ac

t te

ns

.

1

.

2

.

5

tens

- 1

ten

=

4 te

ns

8 te

ns -

5 te

ns =

3

tens

5

0 -

10

=

40

80

- 5

0 =

30

3

.

4

.

6

tens

- 4

tens

=

2 te

ns

9 te

ns -

3 te

ns =

6 te

ns

6

0 -

40

= 20

9

0 -

30

=

60

5

.

6

.

4

tens

- 2

tens

=

2 te

ns

7 te

ns -

2 te

ns =

5

tens

4

0 -

20

= 20

7

0 -

20

=

50

So

lve

.

7

. W

hat i

s 2

tens

from

7 te

ns?

70 -

20

=

50

8

. W

hat i

s 3

tens

from

5 te

ns?

50 -

30

=

20

006_

010_

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dd P

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7 5

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10 5

:39:

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-087

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umes

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0057

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iary

/App

licat

ion_

File

s/C

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..

Nam

e

Gra

de 2

6

Cha

pter

6

2M

R3

.0,

2N

S2

.3

Yo

u c

an

us

e b

as

ic f

ac

ts t

o h

elp

su

btr

ac

t te

ns

.

5 -

2 =

3 h

elp

s y

ou

kn

ow

th

at

50

- 2

0 =

30

.

5

- 2

=

3

50

- 20

=

30

So

lve

.

1

. 3

- 2

=

1

2.

30 -

20

=

10

3

. 50

- 3

0 =

20

4

. 40

- 1

0 =

30

5

. 70

- 2

0 =

50

6

. 60

- 3

0 =

30

7

. 80

- 4

0 =

40

8

. 90

- 1

0 =

80

Re

tea

ch

Sub

trac

t Ten

s

6-1

006_

010_

C06

L1_1

0580

5.in

ddP

age

65/

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01:

23:1

8A

Mel

hi-4

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Copyright ©

Macm

illan/McG

raw-H


cGraw

-Hill C

ompanies, Inc.

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An

swer

s

pygp

Chapter Resources

Gra

de 2

9

Cha

pter

6

Nam

e

2M

R3

.0,

2N

S2

.36

-1P

rob

lem

-So

lvin

g P

rac

tic

e

Sub

trac

t Ten

s

So

lve

.

1

. W

hat i

s 2

tens

from

3 te

ns?

30 -

20

=

10

2

. W

hat i

s 5

tens

from

9 te

ns?

40

3

. W

hat i

s 1

ten

from

3 te

ns?

30 -

10

=

20

4

. W

hat i

s 4

tens

from

8 te

ns?

40

5

. D

ee h

ad 2

0 tic

kets

for

the

rides

at t

he fa

ir. S

he u

sed

10 o

f the

m. H

ow m

any

ticke

ts d

oes

she

have

left?

10

tick

ets

6

. La

rry

had

60 b

aseb

all c

ards

. H

e ga

ve 2

0 ca

rds

to h

is

brot

her.

How

man

y ba

seba

ll ca

rds

does

he

have

left?

40 b

aseb

all c

ards

7

. Ji

ll ha

d 80

stic

kers

. She

ga

ve 5

0 st

icke

rs to

a fr

iend

. H

ow m

any

stic

kers

doe

s sh

e ha

ve n

ow?

30 s

ticke

rs

8

. A

ndy

had

40 p

enni

es. H

e sp

ent 3

0 of

them

on

a ne

at

penc

il. H

ow m

any

penn

ies

does

And

y ha

ve n

ow?

10 p

enni

es

9

. Ja

ne h

ad 9

0 be

ads.

She

lo

st 4

0 of

them

. How

man

y be

ads

does

Jan

e ha

ve n

ow?

50 b

eads

10

. B

ill h

ad 3

0 to

y ca

rs. H

e ga

ve

10 c

ars

to S

am a

nd 1

0 ca

rs

to J

oe. H

ow m

any

toy

cars

do

es B

ill h

ave

left?

10 to

y ca

rs

006_

010_

C06

L1_1

0580

5.in

dd P

age

9 5

/6/1

0 1

2:27

:31

AM

elh

i-2/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_12/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Nam

e

Gra

de 2

8

Cha

pter

6

2M

R3

.0,

2N

S2

.3H

om

ew

ork

Pra

cti

ce

Sub

trac

t Ten

s

Su

btr

ac

t te

ns

.

1

. 7

tens

- 3

tens

=

4 te

ns

5 te

ns -

2 te

ns =

3

tens

70

50

- 3

0 -

20

40

30

2.

80

90

40

90

- 4

0 -

20

- 3

0-

70

40

7010

20

3

.

80

40

80

70-

50

- 2

0-

60

- 2

030

20

2050

4

.

50

70

60

90-

10

- 1

0-

30

- 5

040

60

3040

5

.

90

70

80

50-

80

- 5

0-

10

- 3

010

20

7020

So

lve

.

6-1

6

. Jo

sie

has

60 m

arbl

es. 3

0 of

th

em a

re b

lue.

The

res

t are

re

d. H

ow m

any

red

mar

bles

do

es J

osie

hav

e?30

red

mar

bles

7

. R

ich

has

80 p

enni

es. H

e sp

ends

40

penn

ies.

How

m

any

penn

ies

does

Ric

h ha

ve n

ow?

40 p

enni

es

006_

010_

C06

L1_1

0580

5.in

dd P

age

8 5

/8/1

0 5

:49:

35 P

M u

-s07

3/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_10/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Cop

yrig

ht ©

Mac

mill

an/M

cGra

w-H

ill, a

div

isio

n of

The

McG

raw

-Hill

Com

pani

es, I

nc.

A01_A33_C06AN_105805.indd Page A3 5/13/10 10:38:02 PM u-s089A01_A33_C06AN_105805.indd Page A3 5/13/10 10:38:02 PM u-s089 /Volumes/108/GO00577/MathConnects_CA_CRM_10/Ancilliary/Application_Files/C06_.../Volumes/108/GO00577/MathConnects_CA_CRM_10/Ancilliary/Application_Files/C06_...

P rinter P DF


Answers (Lessons 6-1 and 6-2)

pygp

Chapter Resources

Gra

de 2

11

C

hapt

er 6

Nam

e

2A

F1

.0

4 -

3 =

?

Co

un

t b

ac

k b

y o

ne

s t

o s

ub

tra

ct.

3, 2

, 1, .

. . 4

- 3

= 1

40

- 3

0 =

?

Co

un

t b

ac

k b

y t

en

s t

o s

ub

tra

ct

ten

.

30, 2

0, 1

0 . .

. 40

- 3

0 =

10

Su

btr

ac

t. U

se

th

e m

od

els

fo

r E

xe

rcis

es

1 a

nd

2.

Wri

te y

ou

r a

ns

we

r.

Wri

te t

he

dif

fere

nc

e.

1

. 46

- 4

=

42

2

. 39

- 2

0 =

19

3

. 77

- 4

0 =

37

4.

57 -

5 =

52

5. 5

3 -

20

=

33

6

. 48

- 7

=

41

7

. 65

- 4

0 =

25

8.

71 -

30

=

41

9

. 37

- 4

=

33

1

0.

52 -

10

=

42

Re

tea

ch

Cou

nt B

ack

Ten

s an

d O

nes

6-2

011_

015_

C06

L2_1

0580

5.in

dd P

age

11 5

/6/1

0 1

2:27

:47

AM

elh

i-2/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_12/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Nam

e

Gra

de 2

10

C

hapt

er 6

2M

R3

.0,

2N

S2

.36

-1E

nri

ch

Sub

trac

tion

Sta

rs

So

lve

. L

oo

k a

t th

e s

tars

fo

r h

elp

.

1

.

5

6 7

- 3

- 2

- 5

5

0 -

30

=

20

60

- 2

0 =

40

7

0 -

50

=

20

2

.

6

3 9

- 3

- 1

- 4

6

0 -

30

=

30

30

- 1

0 =

20

9

0 -

40

=

50

3

.

4

8 7

- 2

- 4

- 5

4

0 -

20

=

20

80

- 4

0 =

40

7

0 -

50

=

20

4

. C

olor

all

the

star

s w

ith a

nsw

ers

of 2

.

006_

010_

C06

L1_1

0580

5.in

dd P

age

10 5

/10/

10 5

:39:

52 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Copyright ©

Macm

illan/McG

raw-H


cGraw

-Hill C

ompanies, Inc.


P rinter P DF



An

swer

s

pygp

Chapter Resources

Gra

de 2

13

C

hapt

er 6

Nam

e

2A

F1

.06

-2H

om

ew

ork

Pra

cti

ce

Cou

nt B

ack

Ten

s an

d O

nes

Co

un

t b

ac

k t

o s

ub

tra

ct.

1

.

85

38

57

42

97-

30

- 6

- 2

0-

20

- 4

55

3237

2293

2

.

74

37

86

27

79-

50

- 3

0 -

2 -

6-

40

24

784

2139

3

.

53

68

43

83

34-

10

- 5

- 3

0-

50

- 3

43

6313

3331

4

.

22

57

68

75

89-

2

- 2

0-

50

- 2

- 4

020

37

1873

49

So

lve

.

5

. M

andy

had

25

penn

ies.

She

lost

two

penn

ies

in th

e gr

ass.

H

ow m

uch

mon

ey d

oes

she

have

left?

23

pen

nies

6

. V

erno

n ha

d 38

app

les.

He

gave

20

to h

is fr

iend

s.

How

man

y ap

ples

did

he

have

left?

18

app

les

7

. W

hat i

s 5

tens

from

9 te

ns?

90 -

50

=

40

8

. W

hat i

s 2

tens

from

8 te

ns?

80 -

20

=

60

011_

015_

C06

L2_1

0580

5.in

dd P

age

13 5

/6/1

0 1

2:28

:01

AM

elh

i-2/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_12/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Nam

e

Gra

de 2

12

C

hapt

er 6

2A

F1

.0S

kil

ls P

rac

tic

e

Cou

nt B

ack

Ten

s an

d O

nes

Co

un

t b

ac

k t

o s

ub

tra

ct.

1

.

28

64

36

52

45

- 5

-

30

- 4

- 1

0 -

2

23

3432

4243

2

.

61

68

75

89

37-

40

- 2

- 5

0-

20

- 3

21

6625

6934

3

.

54

65

32

60

26

- 1

-

40

- 1

0 -

3-

10

53

2522

5716

4

.

70

45

72

55

82-

30

- 2

0 -

2 -

4-

60

40

2570

5122

So

lve

.

5

. La

uren

has

50

penn

ies

in h

er p

ocke

t. S

he s

pend

s 20

of t

hem

. H

ow m

any

penn

ies

does

she

hav

e le

ft?

30 p

enni

es

6

. A

lex

has

67 p

enni

es. H

e sp

ends

thre

e pe

nnie

s. H

ow m

any

penn

ies

does

he

have

left?

64

pen

nies

7

. W

hat i

s 3

tens

from

9 te

ns?

90 -

30

=

60

8

. W

hat i

s 4

tens

from

5 te

ns?

50 -

40

=

10

6-2

011_

015_

C06

L2_1

0580

5.in

dd P

age

12 5

/8/1

0 5

:49:

56 P

M u

-s07

3/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_10/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Cop

yrig

ht ©

Mac

mill

an/M

cGra

w-H

ill, a

div

isio

n of

The

McG

raw

-Hill

Com

pani

es, I

nc.


P rinter P DF



pygp

Chapter Resources

Gra

de 2

15

C

hapt

er 6

Nam

e

2A

F1

.0E

nri

ch

Cou

ntin

g ba

ck te

ns to

sub

trac

t

8070

6050

4030

2010

090

Fil

l in

th

e m

iss

ing

nu

mb

ers

1

.5

04

03

02

02

.4

030

2010

50

- 3

0 =

20

40

- 3

0 =

10

3

.9

080

7060

504

.4

030

20

90

- 4

0 =

50

40

- 2

0 =

20

5

.6

050

4030

20

60

- 4

0 =

20

6

.8

070

6050

4030

80

- 5

0 =

30

6-2

011_

015_

C06

L2_1

0580

5.in

dd P

age

15 5

/10/

10 5

:40:

48 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Nam

e

Gra

de 2

14

C

hapt

er 6

2A

F1

.06

-2P

rob

lem

-So

lvin

g P

rac

tic

e

Cou

nt B

ack

Ten

s an

d O

nes

So

lve

.

1

. Ju

ne h

as 1

4 ba

seba

ll ca

rds.

S

he g

ives

two

to a

frie

nd.

How

man

y ca

rds

are

left?

12

car

ds

2

. D

onal

d ha

s 56

gra

pes.

He

eats

five

of t

hem

. How

man

y gr

apes

doe

s he

hav

e le

ft?

51 g

rape

s

3

. B

illy

has

24 m

arbl

es. H

e lo

ses

thre

e of

them

. How

m

any

mar

bles

doe

s he

ha

ve le

ft?

21 m

arbl

es

4

. T

ricia

has

18

stam

ps. S

he

give

s te

n to

her

sis

ter.

How

m

any

stam

ps a

re le

ft?

8 s

tam

ps

5

. D

r. M

iller

has

79

patie

nts

in

one

wee

k. 3

0 ar

e ch

ildre

n.

The

res

t are

adu

lts.

How

man

y ad

ults

doe

s D

r. M

iller

see

? 49

adu

lts

6

. T

anya

col

lect

s 18

5 ca

ns.

She

cru

shes

50

cans

. H

ow m

any

cans

doe

s sh

e ha

ve le

ft to

cru

sh?

135

can

s

011_

015_

C06

L2_1

0580

5.in

dd P

age

14 5

/6/1

0 1

2:28

:08

AM

elh

i-2/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_12/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Copyright ©

Macm

illan/McG

raw-H


cGraw

-Hill C

ompanies, Inc.


P rinter P DF



An

swer

s

pygp

Chapter Resources

Gra

de 2

17

C

hapt

er 6

Nam

e

2A

F1

.0,

2M

R1

.26

-3S

kil

ls P

rac

tic

e

Reg

roup

Ten

s as

One

s

Us

e W

ork

Ma

t 6

an

d

to

su

btr

ac

t.

Do

you

need

mor

e on

es to

sub

trac

t?W

rite

the

diffe

renc

e.

1

. 32

- 5

no

yes

32 -

5 =

27

2

. 27

- 8

no

yes

27 -

8 =

19

3

. 28

- 5

no

yes

28 -

5 =

23

4

. 55

- 7

no

yes

55 -

7 =

48

5

. 41

- 6

no

yes

41 -

6 =

35

6

. 36

- 9

no

yes

36 -

9 =

27

So

lve

.

7

. B

rian

has

42 tr

adin

g ca

rds.

He

give

s se

ven

to a

frie

nd. H

ow

man

y tr

adin

g ca

rds

does

Bria

n ha

ve le

ft?

35 tr

adin

g ca

rds

8

. S

am h

as 3

3 ce

nts.

He

spen

ds 1

5 at

the

stor

e. H

ow m

uch

mon

ey d

oes

he h

ave

left?

18

cen

ts

016_

020_

C06

L3_1

0580

5.in

dd P

age

17 5

/10/

10 5

:41:

21 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Nam

e

Gra

de 2

16

C

hapt

er 6

2A

F1

.0,

2M

R1

.2

Can

dy h

ad 3

2 m

arke

rs. S

he g

ives

six

to R

ay.

How

man

y m

arke

rs d

oes

she

have

left?

32 -

6 =

?

To

he

lp s

olv

e t

his

pro

ble

m,

yo

u c

an

re

gro

up

on

e

bo

x o

f m

ark

ers

as

te

n m

ark

ers

.

=

No

w t

he

re a

re e

no

ug

h m

ark

ers

. S

ub

tra

ct.

32 -

6 =

26

. Can

dy h

as 2

6 m

arke

rs le

ft.

Wri

te t

he

nu

mb

er

se

nte

nc

es

. U

se

.

Re

gro

up

if

ne

ed

ed

. T

he

n s

olv

e.

1

. Ji

m h

ad 5

2 po

ster

s. H

e so

ld 1

8 of

them

. H

ow m

any

post

ers

does

he

have

now

? 52

-

18 =

34

2

. E

llen

had

34 c

rayo

ns. S

he g

ives

5 to

her

frie

nds.

H

ow m

any

does

she

hav

e le

ft?

34-

5

=

29

3

. Jo

hn h

ad 4

1 pe

nnie

s. H

e sp

ent 1

5 of

them

. H

ow m

any

penn

ies

does

he

have

now

?41

-

15 =

26

Re

tea

ch

Reg

roup

Ten

s as

One

s

6-3

016_

020_

C06

L3_1

0580

5.in

dd P

age

16 5

/10/

10 5

:41:

19 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Cop

yrig

ht ©

Mac

mill

an/M

cGra

w-H

ill, a

div

isio

n of

The

McG

raw

-Hill

Com

pani

es, I

nc.


P rinter P DF



pygp

Chapter Resources

Gra

de 2

19

C

hapt

er 6

Nam

e

2A

F1

.0,

2M

R1

.26

-3P

rob

lem

-So

lvin

g P

rac

tic

e

Reg

roup

Ten

s as

One

s

Pre

pa

rati

on

: B

ase-

ten

bloc

ks a

re n

eede

d fo

r th

is a

ctiv

ity.

So

lve

. U

se

blo

ck

s o

r th

e t

en

s a

nd

on

es

wo

rkm

at

for

he

lp.

1

. M

elis

sa m

akes

14

card

s.

She

giv

es 7

to h

er fr

iend

s.

How

man

y ca

rds

are

left?

7

car

ds

2

. Jo

e ha

s 53

coi

ns. H

e gi

ves

8 to

his

mom

.

How

man

y co

ins

does

he

have

left?

45

coi

ns

3

. F

ran

has

a le

mon

ade

stan

d w

ith 8

1 gl

asse

s of

le

mon

ade.

She

sel

ls 9

of

them

.

How

man

y gl

asse

s ar

e le

ft?

72 g

lass

es

4

. V

icki

has

22

barr

ette

s. S

he

lose

s 4.

How

man

y ar

e le

ft?

18 b

arre

ttes

5

. M

ain

Str

eet S

tore

has

38

coa

ts. N

ine

are

sold

.

How

man

y co

ats

are

left

to s

ell?

29

coa

ts

6

. A

ndy

had

44 C

Ds.

He

brok

e 5

of th

em. T

hen

he s

old

nine

to

his

frie

nds.

How

man

y C

Ds

does

he

have

now

? 30

CD

s

016_

020_

C06

L3_1

0580

5.in

dd P

age

19 5

/10/

10 5

:41:

22 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Nam

e

Gra

de 2

18

C

hapt

er 6

2A

F1

.0,

2M

R1

.2H

om

ew

ork

Pra

cti

ce

Reg

roup

Ten

s as

One

s

Su

btr

ac

t.

Do

you

need

mor

e on

es to

sub

trac

t?W

rite

the

diffe

renc

e.

1

. 54

- 6

no

yes

54 -

6 =

48

2

. 32

- 7

no

yes

32 -

7 =

25

3

. 82

- 8

no

yes

82 -

8 =

74

4

. 47

- 5

no

yes

47 -

5 =

42

5

. 63

- 6

no

yes

63 -

6 =

57

6

. 91

- 3

no

yes

91 -

3 =

88

So

lve

.

7

. S

am p

icks

41

plum

s. H

e ea

ts th

ree

for

his

snac

k. H

ow m

any

plum

s ar

e le

ft?

38 p

lum

s

8

. M

r. W

hite

is 5

4 ye

ars

old.

Mr.

Mar

tin is

7 y

ears

you

nger

than

M

r. W

hite

. How

old

is M

r. M

artin

? 47

yea

rs o

ld

6-3

016_

020_

C06

L3_1

0580

5.in

dd P

age

18 5

/6/1

0 1

2:28

:23

AM

elh

i-2/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_12/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Copyright ©

Macm

illan/McG

raw-H


cGraw

-Hill C

ompanies, Inc.


P rinter P DF



An

swer

s

pygp

Chapter Resources

Gra

de 2

21

C

hapt

er 6

Nam

e

2A

F1

.2,

2M

R1

.0

The

re a

re e

ight

bat

s in

a to

wer

. T

hree

mor

e jo

in th

em.

How

man

y ba

ts a

re n

ow in

the

tow

er?

Re

tea

ch

(1

)

Pro

blem

-Sol

ving

Str

ateg

y: W

rite

a N

umbe

r S

ente

nce

6-4

Wh

at

do

I k

no

w?

The

re a

re e

ight

bat

s.T

hree

mor

e jo

in th

em.

Wh

at

do

I n

ee

d t

o f

ind

ou

t?

How

man

y ba

ts th

ere

are

now

.

Un

de

rsta

nd

Ste

p 1

Pla

n

Ste

p 2

So

lve

Ste

p 3

Wri

te a

n a

dd

itio

n s

en

ten

ce

.

8

+

3

=

11 b

ats

Ho

w w

ill

I fi

nd

ou

t h

ow

ma

ny

ba

ts

the

re a

re i

n a

ll?

I kn

ow th

e nu

mbe

r of

bat

s in

the

tow

er.

I kn

ow th

e nu

mbe

r of

bat

s th

at jo

in th

em.

A n

umbe

r se

nten

ce w

ould

tell

me

how

man

y th

ere

are.

I w

ould

sub

trac

t if s

ome

bats

left

the

tow

er.

But

no

bats

left

the

tow

er.

I w

ill w

rite

a nu

mbe

r se

nten

ce a

nd ad

d.

Ch

ec

k

Ste

p 4

Wha

t wer

e th

e tw

o gr

oups

in

my

addi

tion

sent

ence

?D

id m

y an

swer

tell

how

man

y ba

ts th

ere

are

in a

ll?

021_

025_

C06

L4_1

0580

5.in

dd P

age

21 5

/10/

10 5

:43:

30 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Nam

e

Gra

de 2

20

C

hapt

er 6

2A

F1

.0,

2M

R1

.26

-3E

nri

ch

Tra

ding

Ten

s

Dra

w d

ime

s t

o s

ho

w t

en

s a

nd

pe

nn

ies

to

sh

ow

on

es

. W

rite

th

e n

um

be

rs.

Dra

wR

eg

rou

p

3 te

ns 6

one

s

Writ

e th

e nu

mbe

r 36

2 te

ns 1

6 on

es

Writ

e th

e nu

mbe

r 36

Dra

wR

eg

rou

p

4 te

ns 5

one

s

Writ

e th

e nu

mbe

r 45

3 te

ns 1

5 on

es

Writ

e th

e nu

mbe

r 45

Dra

wR

eg

rou

p

2 te

ns

Writ

e th

e nu

mbe

r 20

1 te

n 10

one

s

Writ

e th

e nu

mbe

r 20

016_

020_

C06

L3_1

0580

5.in

dd P

age

20 5

/6/1

0 1

2:28

:31

AM

elh

i-2/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_12/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Cop

yrig

ht ©

Mac

mill

an/M

cGra

w-H

ill, a

div

isio

n of

The

McG

raw

-Hill

Com

pani

es, I

nc.


P rinter P DF



pygp

Chapter Resources

Gra

de 2

23

C

hapt

er 6

Nam

e

2A

F1

.2,

2M

R1

.06

-4S

kil

ls P

rac

tic

e

Pro

blem

-Sol

ving

Str

ateg

y: W

rite

a N

umbe

r S

ente

nce

Wri

te a

nu

mb

er

se

nte

nc

e t

o s

olv

e.

1

. S

even

kid

s ar

e in

the

sand

box.

Six

mor

e ar

e on

th

e sw

ings

. How

man

y ki

ds

are

ther

e in

all?

7

+

6

=

13

kid

s

2

. E

rica

colo

rs 1

5 pi

ctur

es. S

he

give

s 11

to h

er fa

mily

. How

m

any

pict

ures

are

left?

15

–

11

=

4 p

ictu

res

3

. B

en r

an 1

1 m

iles.

Jef

f ran

5

mile

s. H

ow m

any

mor

e m

iles

did

Ben

run

? 11

–

5

=

6

mile

s

4

. R

olan

d m

ows

law

ns. H

e m

ade

22 d

olla

rs th

e fir

st

wee

k. H

e m

ade

7 do

llars

the

next

. How

muc

h m

oney

did

he

mak

e?

22

+

7

=

29 d

olla

rs

5

. N

ine

chic

kens

are

eat

ing.

F

ourt

een

mor

e ch

icke

ns jo

in

them

. How

man

y ch

icke

ns

are

eatin

g no

w?

9

+

14

=

23 c

hick

ens

6

. Je

sse

buys

16

gam

e ca

rds.

H

e gi

ves

4 to

his

frie

nds.

H

ow m

any

card

s do

es J

esse

ha

ve le

ft?

16

–

4

=

12 c

ards

021_

025_

C06

L4_1

0580

5.in

dd P

age

23 5

/10/

10 5

:43:

31 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Nam

e

Gra

de 2

22

C

hapt

er 6

2A

F1

.2,

2M

R1

.0R

ete

ac

h (

2)

Pro

blem

-Sol

ving

Str

ateg

y: W

rite

a N

umbe

r S

ente

nce

Wri

te a

nu

mb

er

se

nte

nc

e t

o s

olv

e.

6-4

1

. S

pot h

as 1

3 bo

nes

in h

is

dogh

ouse

. He

foun

d fo

ur

mor

e in

the

yard

. How

man

y bo

nes

does

Spo

t hav

e?13

+

4

=

17 b

ones

2

. Lu

see

s 17

rab

bits

in a

fiel

d.

She

see

s si

x m

ore

in th

e w

oods

.

How

man

y ra

bbits

doe

s sh

e se

e in

all?

17

+

6

=

23

rab

bits

3

. T

wen

ty-o

ne m

onke

ys a

re

in th

e tr

ee. F

ive

mon

keys

sw

ing

away

. How

man

y m

onke

ys a

re le

ft?

21

–

5

=

16 m

onke

ys

4

. T

hirt

een

crow

s ar

e in

a

corn

field

. Six

fly

away

. How

m

any

crow

s ar

e le

ft?

13

–

6

=

7 c

row

s

5

. K

ay fi

nds

six

shel

ls. T

hen

she

finds

nin

e m

ore.

How

m

any

shel

ls d

id s

he fi

nd

in a

ll?

6

+

9

=

15 s

hells

6

. Jo

ey c

atch

es 1

8 fis

h. H

is

fam

ily k

eeps

four

of t

hem

. H

ow m

any

fish

did

they

le

t go?

18

–

4

=

14

fish

021_

025_

C06

L4_1

0580

5.in

dd P

age

22 5

/10/

10 5

:43:

31 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Copyright ©

Macm

illan/McG

raw-H


cGraw

-Hill C

ompanies, Inc.


P rinter P DF



An

swer

s

pygp

Chapter Resources

Gra

de 2

25

C

hapt

er 6

Nam

e

2A

F1

.2,

2M

R1

.0E

nri

ch

Tar

get N

umbe

r

Su

btr

ac

t th

e n

um

be

rs n

ex

t to

ea

ch

oth

er.

Wri

te t

he

nu

mb

er

se

nte

nc

es

wit

h a

dif

fere

nc

e o

f 2

6.

Ca

n y

ou

fin

d a

ll s

ix?

Th

e t

arg

et

nu

mb

er

is 2

6.

7178

5215

7549

9679

4263

3753

1637

4115

Writ

e th

e su

btra

ctio

n pr

oble

ms

on th

e lin

es.

78 –

52

= 2

6

75 –

49

= 2

6

63 –

37

= 2

6

41 –

15

= 2

6

79 –

53

= 2

6

42 –

16

= 2

6

6-4

021_

025_

C06

L4_1

0580

5.in

dd P

age

25 5

/10/

10 5

:43:

32 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Nam

e

Gra

de 2

24

C

hapt

er 6

2A

F1

.2,

2M

R1

.06

-4H

om

ew

ork

Pra

cti

ce

Pro

blem

-Sol

ving

Str

ateg

y: W

rite

a N

umbe

r S

ente

nce

Wri

te a

nu

mb

er

se

nte

nc

e t

o s

olv

e.

1

. T

he s

tore

has

15

sand

wic

hes.

Six

are

sol

d.

How

man

y sa

ndw

iche

s ar

e le

ft to

sel

l?

15

–

6

=9

san

dwic

hes

2

. T

imm

y th

e tu

rtle

mov

es

14 in

ches

. The

n he

mov

es

thre

e in

ches

. How

man

y in

ches

did

he

mov

e in

all?

14

+

3

=

17

inch

es

3

. T

here

are

12

pine

cone

s in

th

e tr

ee. T

wo

fall

off.

How

m

any

pine

cone

s ar

e le

ft on

th

e tr

ee?

12

–

2

=

10 p

inec

ones

4

. T

here

are

nin

e go

pher

s in

th

e ga

rden

. The

re a

re te

n m

ore

in th

e ya

rd. H

ow m

any

goph

ers

are

ther

e?

9

+

10

=

19 g

ophe

rs

5

. G

ary

mak

es 1

6 ho

t dog

s. H

e se

lls 1

1. H

ow m

any

hot d

ogs

are

left?

16

–

11

=

5

hot

dog

s

6

. T

here

are

11

kite

s in

the

sky.

The

re a

re tw

o m

ore

in

the

tree

.

How

man

y ki

tes

are

ther

e in

al

l?

11

+

2

=

13 k

ites

021_

025_

C06

L4_1

0580

5.in

dd P

age

24 5

/6/1

0 1

2:28

:48

AM

elh

i-2/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_12/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Cop

yrig

ht ©

Mac

mill

an/M

cGra

w-H

ill, a

div

isio

n of

The

McG

raw

-Hill

Com

pani

es, I

nc.


P rinter P DF



pygp

Chapter Resources

Gra

de 2

27

C

hapt

er 6

Nam

e

2A

F1

.0,

2M

R2

.16

-5S

kil

ls P

rac

tic

e

Sub

trac

t One

-Dig

it N

umbe

rs fr

om T

wo-

Dig

it N

umbe

rs

Us

e W

ork

Ma

t 6

an

d

to

su

btr

ac

t.

1

. t

ens

ones

1

13

2

3-

9

1

4

t

ens

ones

2

16

3

6-

9

2

7

t

ens

ones

3

11

4

1

-

5

3

6

t

ens

ones

5

8

-

6

5

2

2

. t

ens

ones

3

16

4

6-

7

3

9

t

ens

ones

4

12

5

2-

6

4

6

t

ens

ones

2

17

3

7-

9

2

8

t

ens

ones

5

15

6

5

-

8

5

7

3

. G

ary

has

72 c

ents

. He

spen

ds e

ight

cen

ts. H

ow

muc

h do

es h

e ha

ve n

ow?

64 c

ents

4

. T

here

are

55

mic

e in

the

barn

. A c

at c

hase

s ni

ne o

f th

em a

way

. How

man

y m

ice

are

left?

46

mic

e

026_

030_

C06

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5.in

dd P

age

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-087

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File

s/C

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..

Nam

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Gra

de 2

26

C

hapt

er 6

2A

F1

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2M

R2

.1

Fin

d 4

2 -

8.

te

ns

ones

S

how

42.

C

an y

ou s

ubtr

act 8

one

s?

Reg

roup

1 te

n as

10

ones

.

Now

ther

e ar

e 3

tens

and

12

one

s.

Us

e W

ork

Ma

t 6

an

d

to

su

btr

ac

t.

1

. t

ens

ones

4

13

5

3

-

9

4

4

2

. t

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ones

2

14

3

4

-

6

2

8

3

. t

ens

ones

3

17

4

7

-

8

3

9

115

711

414

4

.

25

5.

81

6

.

54

-

7

-

8

-

9

18

73

455

12

2

13

7

.

62

8.

76

9

.

33

-

3

-

4

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6

59

72

27

Re

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Sub

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it N

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rs fr

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wo-

Dig

it N

umbe

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6-5

3

12

4

2

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8

3

4

026_

030_

C06

L5_1

0580

5.in

dd P

age

26 5

/10/

10 5

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M s

-087

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File

s/C

06_.

..

Copyright ©

Macm

illan/McG

raw-H


cGraw

-Hill C

ompanies, Inc.


P rinter P DF



An

swer

s

pygp

Chapter Resources

Gra

de 2

29

C

hapt

er 6

Nam

e

2A

F1

.0,

2M

R2

.16

-5P

rob

lem

-So

lvin

g P

rac

tic

e

Sub

trac

t One

-Dig

it N

umbe

rs fr

om T

wo-

Dig

it N

umbe

rs

So

lve

.

1

. Ju

an h

as 1

5 cr

acke

rs. H

e ea

ts 4

. How

man

y ar

e le

ft?

11 c

rack

ers

2

. R

ita h

as 2

2 st

icke

rs. S

he

give

s fiv

e to

Pau

l. H

ow

man

y st

icke

rs a

re le

ft?

17 s

ticke

rs

3

. Ju

lia h

as 2

4 ca

rds.

She

tr

ades

six

car

ds fo

r a

book

. H

ow m

any

card

s do

es s

he

have

left?

18

car

ds

4

. Li

sa h

as 1

8 ra

isin

s. S

he

eats

6. H

ow m

any

are

left?

12

rai

sins

5

. Je

ssie

has

34

mar

bles

. He

lose

s se

ven

of th

em. H

ow

man

y do

es h

e ha

ve n

ow?

27 m

arbl

es

6

. T

here

are

82

balls

in th

e gy

m. S

am p

uts

nine

aw

ay.

How

man

y ba

lls a

re s

till i

n th

e gy

m?

73 b

alls

026_

030_

C06

L5_1

0580

5.in

dd P

age

29 5

/10/

10 5

:44:

22 P

M s

-087

/Vol

umes

/108

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7/M

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File

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06_.

..

Nam

e

Gra

de 2

28

C

hapt

er 6

2A

F1

.0,

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R2

.1H

om

ew

ork

Pra

cti

ce

Sub

trac

t One

-Dig

it N

umbe

rs fr

om T

wo-

Dig

it N

umbe

rs

Su

btr

ac

t.

1

. t

ens

ones

4

15

5

5-

7

4

8

t

ens

ones

7

13

8

3-

5

7

8

t

ens

ones

2

16

3

6-

9

2

7

t

ens

ones

8

10

9

0-

8

8

2

2

. t

ens

ones

4

3

-

1

4

2

t

ens

ones

5

12

6

2-

8

5

4

t

ens

ones

6

18

7

8-

9

6

9

t

ens

ones

8

11

9

1-

4

8

7

6-5

3

. T

here

are

23

child

ren

play

ing

outs

ide.

7 g

o in

side

. H

ow m

any

are

left

outs

ide?

16 c

hild

ren

4

. K

aren

has

35

grap

es. S

he

give

s ei

ght t

o he

r fr

iend

s.

How

man

y gr

apes

are

left?

27

gra

pes

026_

030_

C06

L5_1

0580

5.in

dd P

age

28 5

/6/1

0 1

2:29

:02

AM

elh

i-2/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

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A_C

RM

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Anc

illia

ry/A

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atio

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iles/

C06

_...

Cop

yrig

ht ©

Mac

mill

an/M

cGra

w-H

ill, a

div

isio

n of

The

McG

raw

-Hill

Com

pani

es, I

nc.


P rinter P DF



pygp

Chapter Resources

Gra

de 2

31

C

hapt

er 6

Nam

e

2A

F1

.0,

2N

S2

.0

Fin

d 3

6 -

17

.

te

ns

ones

S

how

36.

C

an y

ou s

ubtr

act 7

one

s?

Reg

roup

1 te

n as

10

ones

.

Now

ther

e ar

e 2

tens

and

16

one

s.

Us

e W

ork

Ma

t 6

an

d

to

su

btr

ac

t.

1

. t

ens

ones

7

10

8

0

- 3

6

4

4

2

. t

ens

ones

5

15

6

5

- 2

7

3

8

3

. t

ens

ones

3

17

4

7

- 1

9

2

8

4

.

29

5.

41

6

.

63

- 1

5 -

18

- 3

8

14

23

25

7

.

76

8.

54

9

.

32

- 4

9 -

25

- 1

6

27

29

16

Re

tea

ch

Sub

trac

t Tw

o-D

igit

Num

bers

6-6

2

16

3

6 -

1 7

1

9

031_

035_

C06

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dd P

age

31 5

/10/

10 5

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44 P

M s

-087

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umes

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Nam

e

Gra

de 2

30

C

hapt

er 6

2A

F1

.0,

2M

R2

.16

-5E

nri

ch

Che

ck to

Reg

roup

Lo

ok

at

ea

ch

pro

ble

m.

If y

ou

ne

ed

to

re

gro

up

pu

t

a c

he

ck

ma

rk i

n t

he

bo

x.

If y

ou

do

no

t n

ee

d t

o

reg

rou

p p

ut

an

X i

n t

he

bo

x.

1

. 34

- 8

re

grou

p ✓

2

. 39

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p X

3

. 46

- 7

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grou

p ✓

4

. 32

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re

grou

p ✓

5

. 50

- 3

6 re

grou

p ✓

6

. 27

- 1

5 re

grou

p X

7

. 61

- 3

3 re

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8

. 52

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p ✓

9

. 35

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73 -

52

regr

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11

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41 -

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13

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70 -

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66 -

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026_

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C06

L5_1

0580

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dd P

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M s

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File

s/C

06_.

..

Copyright ©

Macm

illan/McG

raw-H


cGraw

-Hill C

ompanies, Inc.


P rinter P DF



An

swer

s

pygp

Chapter Resources

Gra

de 2

33

C

hapt

er 6

Nam

e

2A

F1

.0,

2N

S2

.06

-6H

om

ew

ork

Pra

cti

ce

Sub

trac

t Tw

o-D

igit

Num

bers

Su

btr

ac

t.

1

. t

ens

ones

3

13

4

3

- 2

5

1

8

ten

s on

es

5

17

6

7

- 2

8

3

9

tens

on

es

2

15

3

5

- 1

9

1

6

2

. t

ens

ones

4

8

4

8

- 3

7

1

1

ten

s on

es

7

12

8

2

- 5

6

2

6

tens

on

es

4

16

5

6

- 2

8

2

8

3

. T

om d

id h

is c

hore

s in

38

min

utes

. Lin

da d

id h

er

chor

es in

29

min

utes

. How

m

any

mor

e m

inut

es d

id it

ta

ke T

om to

do

his

chor

es?

9 m

inut

es

4

. T

here

wer

e 75

str

aws

in th

e lu

nchr

oom

. Kid

s us

ed 2

7 of

them

at l

unch

time.

How

m

any

stra

ws

wer

e le

ft?

48 s

traw

s

5

. M

ain

Str

eet S

tore

has

71

com

ic b

ooks

. Fiv

e of

th

em a

re s

old.

How

man

y co

mic

boo

ks a

re th

ere

now

? 66

com

ic b

ooks

6

. Th

ere

are

25 s

tude

nts

in

Mis

s Fu

ente

s’s

seco

nd g

rade

. Th

ere

are

six

stud

ents

abs

ent

toda

y. H

ow m

any

stud

ents

ar

e th

ere

in c

lass

toda

y?19

stu

dent

s

031_

035_

C06

L6_1

0580

5.in

dd P

age

33 5

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2:29

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AM

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Nam

e

Gra

de 2

32

C

hapt

er 6

2A

F1

.0,

2N

S2

.0S

kil

ls P

rac

tic

e

Sub

trac

t Tw

o-D

igit

Num

bers

Us

e W

ork

Ma

t 6

an

d

to

su

btr

ac

t.

1

. t

ens

ones

4

15

5

5-

1

7

3

8

t

ens

ones

4

5

4

5

- 1

2

3

3

t

ens

ones

2

11

3

1

-

7

2

4

t

ens

ones

5

12

6

2

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8

4

4

2

. t

ens

ones

3

15

4

5

- 2

9

1

6

t

ens

ones

2

8

2

8

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2

1

6

t

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ones

4

16

5

6

- 2

7

2

9

t

ens

ones

7

4

7 4

- 7

0

4

6-6

3

. P

hoeb

e m

akes

52

cook

ies

for

the

bake

sal

e. S

he s

ells

36

of t

hem

. How

man

y co

okie

s ar

e le

ftove

r?

16 c

ooki

es

4

. T

here

are

41

pum

pkin

s in

th

e fie

ld. T

he fa

rmer

sol

d 17

of t

hem

. How

man

y pu

mpk

ins

are

left?

24

pum

pkin

s

031_

035_

C06

L6_1

0580

5.in

dd P

age

32 5

/10/

10 5

:44:

47 P

M s

-087

/Vol

umes

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0057

7/M

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onne

cts_

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_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Cop

yrig

ht ©

Mac

mill

an/M

cGra

w-H

ill, a

div

isio

n of

The

McG

raw

-Hill

Com

pani

es, I

nc.


P rinter P DF



pygp

Chapter Resources

Gra

de 2

35

C

hapt

er 6

Nam

e

2A

F1

.0,

2N

S2

.0E

nri

ch

Fol

low

the

Flo

w C

hart

Col

or th

e sh

apes

gre

en

if yo

u ha

d to

reg

roup

to

find

the

answ

er.

57-

49 8

gree

n

53

- 2

726

gree

n

44-

22

22

55

- 4

510

92

- 4

1

51

65

- 1

748

gree

n

43-

38 5

gree

n

51-

18

33gr

een

56-

28

28gr

een

31-

16

15gr

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75-

50

25

64-

19

45gr

een

6-6

031_

035_

C06

L6_1

0580

5.in

dd P

age

35 5

/10/

10 5

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48 P

M s

-087

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Nam

e

Gra

de 2

34

C

hapt

er 6

2A

F1

.0,

2N

S2

.06

-6P

rob

lem

-So

lvin

g P

rac

tic

e

Sub

trac

t Tw

o-D

igit

Num

bers

So

lve

.

1

. R

ay h

as 5

6 co

mic

s. H

e gi

ves

13 a

way

. How

man

y ar

e le

ft?

43 c

omic

s

2

. Ja

ke c

olle

cts

62 g

ame

card

s. H

e gi

ves

48 to

a

frie

nd. H

ow m

any

card

s do

es J

ake

have

left?

14

car

ds

3

. V

era

has

21 s

tam

ps. M

eg

has

nine

sta

mps

. How

man

y m

ore

stam

ps d

oes

Ver

a ha

ve?

12 m

ore

stam

ps

4

. R

obbi

e R

abbi

t dug

up

37

carr

ots.

He

ate

33. H

ow

man

y ar

e le

ft?

4 c

arro

ts

5

. T

here

are

31

days

in

Aug

ust.

The

re a

re 2

8 da

ys in

Feb

ruar

y. H

ow

man

y m

ore

days

are

ther

e in

Aug

ust?

3

mor

e da

ys

6

. Jo

hn h

as 1

5 po

ints

. Ella

ha

s si

x po

ints

. Fel

ix h

as

eigh

t poi

nts.

How

man

y m

ore

poin

ts d

oes

John

hav

e th

an E

lla?

9 m

ore

poin

ts

031_

035_

C06

L6_1

0580

5.in

dd P

age

34 5

/10/

10 5

:44:

48 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Copyright ©

Macm

illan/McG

raw-H


cGraw

-Hill C

ompanies, Inc.


P rinter P DF



An

swer

s

pygp

Chapter Resources

Gra

de 2

37

C

hapt

er 6

Nam

e

2N

S2

.1,

2M

R2

.26

-7S

kil

ls P

rac

tic

e

Che

ck S

ubtr

actio

n

Su

btr

ac

t. T

he

n c

he

ck

by

ad

din

g.

1

.

65

44

37

23

43

18

-

21

+ 2

1 -

14

+ 1

4 -

25

+ 2

5

44

65

23

37

18

43

2

.

71

64

54

18

81

47

- 7

+

7

- 3

6 +

36

- 3

4 +

34

64

71

18

54

47

81

3

.

95

23

63

54

48

29

-

23

+ 7

2

- 9

+

9

- 1

9 +

19

72

95

54

63

29

48

So

lve

. C

he

ck

by

ad

din

g.

4

. S

tude

nts

in M

r. F

rank

’s c

lass

m

ade

10 p

ictu

res.

The

y sh

owed

6 a

t the

art

fair.

How

m

any

wer

e no

t sho

wn?

4

pic

ture

s

5

. M

r. L

evin

e is

53

year

s ol

d. M

r. S

mith

is 3

7 ye

ars

old.

How

muc

h ol

der

is

Mr.

Lev

ine?

16 y

ears

old

er

036_

040_

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dd P

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37 5

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File

s/C

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..

Nam

e

Gra

de 2

36

C

hapt

er 6

2N

S2

.1,

2M

R2

.2

Fin

d 3

2 -

14

.

ten

s on

es

2

12

3

2

- 1

4

1

8

Is th

is a

nsw

er c

orre

ct?

ch

eck

by a

ddin

g.

Su

btr

ac

t. T

he

n c

he

ck

by

ad

din

g.

1.

16

112

.

53

35

- 5

+ 5

- 1

8 +

18

11

16

35

53

3

.

93

5

5 4

.

46

2

3

-

38

+ 3

8 -

23

+ 2

3

55

9

3

23

46

5

.

84

27

6

.

75

2

6

- 5

7 +

57

- 4

9 +

49

27

8

4

75

Re

tea

ch

Che

ck S

ubtr

actio

n

6-7

1

18

+ 1

4

32

26

036_

040_

C06

L7_1

0580

5.in

dd P

age

36 5

/10/

10 5

:43:

53 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Cop

yrig

ht ©

Mac

mill

an/M

cGra

w-H

ill, a

div

isio

n of

The

McG

raw

-Hill

Com

pani

es, I

nc.


P rinter P DF



pygp

Chapter Resources

Gra

de 2

39

C

hapt

er 6

Nam

e

2N

S2

.1,

2M

R2

.26

-7P

rob

lem

-So

lvin

g P

rac

tic

e

Che

ck S

ubtr

actio

n

So

lve

. C

he

ck

by

ad

din

g.

1

. C

ole

has

9 st

icke

rs. H

e ga

ve

2 to

a fr

iend

. How

man

y st

icke

rs d

oes

Col

e ha

ve

now

? 7 s

ticke

rs

2

. N

an’s

Bik

e S

hop

fixed

37

bike

s in

a w

eek.

Ben

’s B

ikes

fix

ed 1

4. H

ow m

any

mor

e bi

kes

wer

e fix

ed a

t Nan

’s?

23 b

ikes

3

. T

here

are

95

cats

at t

he

shel

ter.

28

cats

are

ado

pted

. H

ow m

any

cats

are

stil

l at

the

shel

ter?

67

cat

s

4

. T

he h

en la

ys 8

egg

s. T

he

farm

er ta

kes

3. H

ow m

any

are

left?

5

egg

s

5

. Im

a pi

cks

48 a

pple

s. S

he

sells

17

of th

em. H

ow m

any

appl

es a

re le

ft?

31 a

pple

s

6

. M

arvi

n pl

ants

66

flow

ers.

R

oy p

lant

s 81

flow

ers.

How

m

any

mor

e flo

wer

s di

d R

oy

plan

t?

15 m

ore

flow

ers

036_

040_

C06

L7_1

0580

5.in

dd P

age

39 5

/10/

10 5

:43:

55 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Nam

e

Gra

de 2

38

C

hapt

er 6

2N

S2

.1,

2M

R2

.2H

om

ew

ork

Pra

cti

ce

Che

ck S

ubtr

actio

n

Su

btr

ac

t. T

he

n c

he

ck

by

ad

din

g.

1

.

37

22

67

19

52

16

-

15

+ 1

5 -

48

+ 4

8 -

36

+ 3

6

22

37

19

67

16

52

2

.

48

30

73

66

82

14

-

18

+ 1

8

- 7

+

7

- 6

8 +

68

30

48

66

73

14

82

3

.

91

46

35

18

77

36

-

45

+ 4

5 -

17

+ 1

7 -

41

+ 4

1

46

91

18

35

36

77

So

lve

. C

he

ck

by

ad

din

g.

6-7

4

. T

here

are

46

girls

ska

ting.

T

here

are

67

boys

ska

ting.

H

ow m

any

mor

e bo

ys th

an

girls

are

ska

ting?

21 m

ore

boys

5

. R

andy

che

cks

out 2

0 bo

oks

from

the

libra

ry. H

e re

turn

s 12

. How

man

y bo

oks

does

R

andy

stil

l hav

e?

8 b

ooks

036_

040_

C06

L7_1

0580

5.in

dd P

age

38 5

/10/

10 5

:43:

54 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Copyright ©

Macm

illan/McG

raw-H


cGraw

-Hill C

ompanies, Inc.


P rinter P DF

An

swer

s



pygp

Chapter Resources

Gra

de 2

41

C

hapt

er 6

Nam

e

2M

R1

.1,

2A

F1

.0

Mild

red

Mou

se c

ount

ed 1

8 ho

les

in o

ne

piec

e of

che

ese.

She

cou

nted

31

hole

s in

the

othe

r pi

ece

of c

hees

e. H

ow m

any

hole

s ar

e th

ere

in a

ll?

Re

tea

ch

(1

)

Pro

blem

-Sol

ving

Inv

estig

atio

n: C

hoos

e a

Str

ateg

y

6-8

Wh

at

do

I k

no

w?

The

re a

re 1

8 ho

les

in o

ne p

iece

of c

hees

e.T

here

are

31

hole

s in

the

othe

r pi

ece

of

chee

se.

Wh

at

do

I n

ee

d t

o f

ind

ou

t?

How

man

y ho

les

are

ther

e?

Un

de

rsta

nd

Ste

p 1

Pla

n

Ste

p 2

So

lve

Ste

p 3

Us

e a

mo

de

l.

The

re a

re

49 h

oles

.

Ho

w w

ill

I fi

nd

ou

t?

I ca

n dr

aw a

pic

ture

to fi

nd o

ut h

ow m

any

hole

s th

ere

are.

But

that

wou

ld ta

ke a

long

tim

e.

I ca

n w

rite

a nu

mbe

r se

nten

ce. B

ut it

mig

ht b

e ea

sier

to u

se a

mod

el.

I ca

n us

e a

mod

el.

Ch

ec

k

Ste

p 4

Doe

s m

y m

odel

sho

w h

ow m

any

hole

s th

ere

are?

Can

I u

se m

y m

odel

to c

heck

my

wor

k?

041_

045_

C06

L8_1

0580

5.in

dd P

age

41 5

/10/

10 5

:47:

50 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Nam

e

Gra

de 2

40

C

hapt

er 6

2N

S2

.1,

2M

R2

.26

-7E

nri

ch

Tur

n S

ubtr

actio

n U

psid

e D

own

Her

e is

a c

hart

. It s

how

s ho

w m

any

mat

h cl

ub

mem

bers

atte

nded

mee

tings

.

Sep

tem

ber

Oct

ober

Nov

embe

rD

ecem

ber

Janu

ary

Feb

ruar

yM

arch

4430

3725

4132

20

So

lve

. A

dd

to

ch

ec

k y

ou

r a

ns

we

rs.

1

. H

ow m

any

mor

e m

embe

rs a

ttend

ed in

Nov

embe

r th

an in

Feb

ruar

y?

37

5

- 3

2 +

32

5

37

2

. H

ow m

any

mor

e m

embe

rs a

ttend

ed in

Sep

tem

ber

than

in O

ctob

er?

44

14

-

30

+ 3

0

14

4

4

3

. H

ow m

any

mor

e m

embe

rs a

ttend

ed in

Jan

uary

th

an in

Mar

ch?

41

21

-

20

+ 2

0

21

4

1

036_

040_

C06

L7_1

0580

5.in

dd P

age

40 5

/10/

10 5

:43:

55 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Cop

yrig

ht ©

Mac

mill

an/M

cGra

w-H

ill, a

div

isio

n of

The

McG

raw

-Hill

Com

pani

es, I

nc.


P rinter P DF



pygp

Chapter Resources

Gra

de 2

43

C

hapt

er 6

Nam

e

2M

R1

.1,

2A

F1

.06

-8S

kil

ls P

rac

tic

e

Pro

blem

-Sol

ving

Inv

estig

atio

n: C

hoos

e a

Str

ateg

y

• W

rite

a nu

mbe

r se

nten

ce.

• D

raw

a p

ictu

re.

• U

se a

mod

el.

Ch

oo

se

a s

tra

teg

y a

nd

so

lve

.

1

. T

here

are

18

frog

s in

the

pond

. T

here

are

five

frog

s in

the

gras

s.

How

man

y fr

ogs

are

ther

e?

23 fr

ogs

2

. T

oget

her,

Jam

ie a

nd A

lex

pick

ed 7

2 be

rrie

s.

Jam

ie p

icke

d 32

. How

man

y di

d A

lex

pick

? 40

ber

ries

3

. T

here

are

10

boys

and

17

girls

at t

he m

all.

How

man

y ki

ds a

re th

ere?

27

kid

s

4

. Ia

n ha

s fiv

e se

ts o

f 10

cray

ons.

H

e gi

ves

thre

e cr

ayon

s fr

om e

ach

set t

o hi

s br

othe

r.

How

man

y cr

ayon

s do

es I

an h

ave

left?

35

cra

yons

041_

045_

C06

L8_1

0580

5.in

dd P

age

43 5

/10/

10 5

:47:

51 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Nam

e

Gra

de 2

42

C

hapt

er 6

2M

R1

.1,

2A

F1

.0R

ete

ac

h (

2)

Pro

blem

-Sol

ving

Inv

estig

atio

n: C

hoos

e a

Str

ateg

y

• W

rite

a nu

mbe

r se

nten

ce.

• D

raw

a p

ictu

re.

• U

se a

mod

el.

Ch

oo

se

a s

tra

teg

y a

nd

so

lve

.

1

. 55

girl

s an

d 36

boy

s pl

ay v

olle

ybal

l. H

ow m

any

mor

e gi

rls th

an

boys

pla

y vo

lleyb

all?

19

mor

e gi

rls

2

. T

here

are

48

cow

s in

the

field

. The

re a

re 2

3 in

the

barn

. How

m

any

cow

s ar

e th

ere?

71

cow

s

Use

the

char

t for

Exe

rcis

es 3

and

4.

Sw

imm

er

Nu

mb

er

of

La

ps

Dan

22S

andy

18A

lan

45

3

. D

urin

g sw

imm

ing

prac

tice,

how

man

y la

ps d

id D

an a

nd

San

dy s

wim

?40

laps

4

. H

ow m

any

mor

e la

ps d

id A

lan

swim

than

San

dy?

mor

e la

ps

6-8

27

041_

045_

C06

L8_1

0580

5.in

dd P

age

42 5

/6/1

0 1

2:29

:37

AM

elh

i-2/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_12/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Copyright ©

Macm

illan/McG

raw-H


cGraw

-Hill C

ompanies, Inc.


P rinter P DF

An

swer

s



pygp

Chapter Resources

Gra

de 2

45

C

hapt

er 6

Nam

e

2M

R1

.1,

2A

F1

.0E

nri

ch

Who

is th

e W

inne

r?

Ada

ms

Sch

ool h

ad a

mat

h co

ntes

t. U

se th

e cl

ues

to fi

nd w

ho w

on fi

rst,

seco

nd, a

nd th

ird p

lace

.

The

win

ner

solv

ed 2

0 pr

oble

ms

corr

ectly

.

Sha

nnon

sol

ved

16 p

robl

ems

corr

ectly

.

Ron

sol

ved

mor

e pr

oble

ms

than

Sha

nnon

.

Cha

d w

as n

ot th

e w

inne

r.

One

stu

dent

sol

ved

18 p

robl

ems

corr

ectly

.

Writ

e th

e na

mes

of t

he w

inne

rs o

n th

e rib

bons

.

1

2

3

Ron

, Ch

ad,

Shan

non

6-8

041_

045_

C06

L8_1

0580

5.in

dd P

age

45 5

/6/1

0 1

2:29

:44

AM

elh

i-2/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_12/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Nam

e

Gra

de 2

44

C

hapt

er 6

2M

R1

.1,

2A

F1

.06

-8H

om

ew

ork

Pra

cti

ce

Pro

blem

-Sol

ving

Inv

estig

atio

n: C

hoos

e a

Str

ateg

y

• W

rite

a nu

mbe

r se

nten

ce.

• D

raw

a p

ictu

re.

• U

se a

mod

el.

Ch

oo

se

a s

tra

teg

y a

nd

so

lve

.

1

. T

odd

eats

12

crac

kers

. The

n he

eat

s 6

mor

e.

How

man

y cr

acke

rs d

id h

e ea

t?

18 c

rack

ers

2

. M

s. A

llen

pain

ts 1

9 pi

ctur

es o

f the

pra

irie.

S

he p

aint

s 37

pic

ture

s of

her

par

rot.

How

man

y m

ore

pict

ures

of h

er p

arro

t did

she

pai

nt?

18 m

ore

pict

ures

of h

er p

arro

t

3

. M

ary

brin

gs fo

ur c

ents

to s

choo

l. S

he fi

nds

five

mor

e in

her

des

k.

The

n a

frie

nd g

ives

her

13

cent

s.

How

muc

h do

es M

ary

have

now

? 22

cen

ts

4

. M

r. D

rew

teac

hes

read

ing.

He

read

3

stor

ies

to h

is s

tude

nts

in th

e fir

st w

eek.

H

e re

ad 2

sto

ries

the

next

wee

k.

He

read

4 s

torie

s th

e w

eek

afte

r th

at.

How

man

y st

orie

s ha

s he

rea

d so

far?

9

sto

ries

041_

045_

C06

L8_1

0580

5.in

dd P

age

44 5

/10/

10 5

:47:

51 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Cop

yrig

ht ©

Mac

mill

an/M

cGra

w-H

ill, a

div

isio

n of

The

McG

raw

-Hill

Com

pani

es, I

nc.


P rinter P DF



pygp

Chapter Resources

Gra

de 2

47

C

hapt

er 6

Nam

e

2N

S2

.0,

2N

S2

.36

-9S

kil

ls P

rac

tic

e

Est

imat

e D

iffer

ence

s

Ro

un

d e

ac

h n

um

be

r to

th

e n

ea

res

t te

n.

Es

tim

ate

the

dif

fere

nc

e.

Rou

nd u

p if

the

num

ber

has

5, 6

, 7, 8

, or

9 on

es.

15 r

ound

s up

to 2

0.R

ound

dow

n if

the

num

ber

has

4, 3

, 2, o

r 1

ones

.14

rou

nds

dow

n to

10.

1

. 49

- 3

1 50

2.

66 -

27

70

-

30

-

30

20

40

3

. 77

- 3

1 80

4.

39 -

31

40

-

30

-

30

50

10

5

. 48

- 3

2 50

6.

89 -

11

90

-

30

-

10

20

80

So

lve

.

7

. S

haro

n sp

ent 3

3 ce

nts

at th

e ca

rniv

al. H

er b

roth

er s

pent

19

cen

ts. A

bout

how

muc

h m

ore

did

Sha

ron

spen

d?10

cen

ts

8

. M

orga

n ha

s 32

mus

ic C

Ds.

H

e gi

ves

13 to

his

bro

ther

. A

bout

how

man

y m

usic

CD

s do

es M

orga

n ha

ve le

ft?

20 C

Ds

046_

050_

C06

L9_1

0580

5.in

dd P

age

47 5

/10/

10 5

:49:

17 P

M s

-087

/Vol

umes

/108

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Nam

e

Gra

de 2

46

C

hapt

er 6

2N

S2

.0,

2N

S2

.3

In t

he

pro

ble

m b

elo

w, y

ou

ne

ed

to

kn

ow

ab

ou

t

ho

w m

an

y p

ea

nu

ts a

re l

eft

. Y

ou

ne

ed

to

ma

ke

a g

oo

d g

ue

ss

. A

gu

es

s i

s a

lso

ca

lle

d a

n

es

tim

ate

. Y

ou

ca

n e

sti

ma

te w

he

n y

ou

do

no

t

ne

ed

an

ex

ac

t a

ns

we

r.

The

re a

re 1

8 pe

anut

s in

the

pile

. Edn

a th

eel

epha

nt e

ats

9 of

them

. Abo

ut h

ow m

any

pean

uts

are

left?

Ste

p 1

: R

ound

eac

h nu

mbe

r to

the

near

est t

en.

The

num

ber

9 is

clo

se to

10.

T

he n

umbe

r 18

is c

lose

to 2

0.9

roun

ds to

10.

18

rou

nds

to 2

0.

Ste

p 2

: S

ubtr

act t

he r

ound

ed n

umbe

rs to

find

you

r es

timat

e.

18 -

9 is

abo

ut th

e sa

me

as 2

0 -

10.

20

- 1

0 =

10

?

18 -

9 is

abo

ut

10.

Ro

un

d t

he

se

nu

mb

ers

to

th

e n

ea

res

t te

n a

nd

es

tim

ate

th

e d

iffe

ren

ce

.

1

.

47 →

50

2

.

42 →

40

-

31

→ -

30

- 3

3 →

-30

20

10

3

.

39 →

40

4.

47

→

50

- 3

2 →

-30

-

38

→ -

40

10

10

Re

tea

ch

Est

imat

e D

iffer

ence

s

6-9

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File

s/C

06_.

..

Copyright ©

Macm

illan/McG

raw-H


cGraw

-Hill C

ompanies, Inc.


P rinter P DF

An

swer

s



pygp

Chapter Resources

Gra

de 2

49

C

hapt

er 6

Nam

e

2N

S2

.0,

2N

S2

.36

-9P

rob

lem

-So

lvin

g P

rac

tic

e

Est

imat

e D

iffer

ence

s

So

lve

.

1

. Ja

net h

as 2

1 ce

nts.

She

sp

ends

9. A

bout

how

muc

h is

left?

10

cen

ts

2

. K

im h

as 5

4 m

arbl

es. 1

9 of

them

are

red

. The

res

t ar

e bl

ue. A

bout

how

man

y m

arbl

es a

re b

lue?

30

mar

bles

3

. M

r. T

am’s

Sho

p ha

d 91

ca

ns o

f jui

ce. T

he s

tore

sol

d 75

in a

wee

k. A

bout

how

m

any

cans

of j

uice

are

stil

l fo

r sa

le?

10 c

ans

of ju

ice

4

. T

im h

as 1

2 pe

ncils

. He

give

s 1

to a

frie

nd. A

bout

how

m

any

are

left?

10

pen

cils

5

. E

rin c

olle

cts

88 c

ans.

She

cr

ushe

s 59

of t

hem

. Abo

ut

how

man

y ca

ns a

re le

ft to

cr

ush?

30

can

s

6

. P

eter

is 5

0 in

ches

tall.

His

yo

unge

r si

ster

is 1

9 in

ches

sh

orte

r th

an P

eter

. Abo

ut

how

tall

is P

eter

’s s

iste

r?

30 in

ches

046_

050_

C06

L9_1

0580

5.in

dd P

age

49 5

/10/

10 5

:49:

18 P

M s

-087

/Vol

umes

/108

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0057

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File

s/C

06_.

..

Nam

e

Gra

de 2

48

C

hapt

er 6

2N

S2

.0,

2N

S2

.3H

om

ew

ork

Pra

cti

ce

Est

imat

e D

iffer

ence

s

Ro

un

d e

ac

h n

um

be

r to

th

e n

ea

res

t te

n.

Es

tim

ate

th

e d

iffe

ren

ce

.

1

. 74

- 1

6 70

2.

54 -

17

50

-

20

-

20

50

30

3

. 76

- 2

7 80

4.

38 -

29

40

-

30

-

30

50

10

5

. 64

- 1

6 60

6.

63 -

21

60

-

20

-

20

40

40

So

lve

.

6-9

7

. A

farm

er h

as 7

2 ap

ples

. She

se

lls 3

9 of

them

. Abo

ut h

ow

man

y ap

ples

are

left?

30

app

les

8

. R

ay’s

Boo

ksto

re h

as

92 b

ooks

abo

ut c

ars.

Ove

r a

year

, 26

book

s ar

e so

ld.

Abo

ut h

ow m

any

book

s on

ca

rs a

re s

till a

t the

sto

re?

60 b

ooks

046_

050_

C06

L9_1

0580

5.in

dd P

age

48 5

/10/

10 5

:49:

18 P

M s

-087

/Vol

umes

/108

/GO

0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Cop

yrig

ht ©

Mac

mill

an/M

cGra

w-H

ill, a

div

isio

n of

The

McG

raw

-Hill

Com

pani

es, I

nc.


P rinter P DF



Nam

e

Gra

de 2

50

C

hapt

er 6

2N

S2

.0,

2N

S2

.36

-9E

nri

ch

Doe

s th

e an

swer

mak

e se

nse?

Es

tim

ate

an

d r

ou

nd

to

an

sw

er

the

pro

ble

ms

.

1

. R

amon

like

s to

col

lect

roc

ks. H

e ha

s 72

roc

ks in

his

col

lect

ion.

H

e gi

ves

33 r

ocks

aw

ay. N

ow h

e th

inks

he

has

abou

t 50

rock

s.Is

he

right

? N

o.

72 r

ound

s to

70

and

33

roun

ds to

30

.

Ram

on h

as a

bout

40

roc

ks.

2

. S

id u

ses

shel

ls in

art

. He

has

45 b

ig a

nd s

mal

l she

lls. H

e ha

s 26

sm

all s

hells

, so

he th

inks

he

has

abou

t 30

larg

e sh

ells

.Is

he

right

? N

o.

45 r

ound

s to

50

and

26

roun

ds to

30

.

Sid

has

abo

ut

20 s

hells

.

3

. E

lain

e bu

ys p

ostc

ards

from

all

arou

nd th

e w

orld

. She

has

36.

S

he w

ants

to s

hare

them

with

her

bro

ther

. She

giv

es h

im 1

8 of

he

r ca

rds.

She

thin

ks s

he w

ill h

ave

abou

t 20

card

s le

ft.Is

she

rig

ht?

Yes

. 36

rou

nds

to

40 a

nd 1

8 ro

unds

to

20.

Ela

ine

has

abou

t 20

car

ds.

046_

050_

C06

L9_1

0580

5.in

ddP

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505/

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011

:48:

38P

Mel

hi-4

/Vol

umes

/108

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0057

7/M

athC

onne

cts_

CA

_CR

M_1

0/A

ncill

iary

/App

licat

ion_

File

s/C

06_.

..

Copyright ©

Macm

illan/McG

raw-H


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-Hill C

ompanies, Inc.

A01_A33_C06AN_105805.indd Page A24 5/14/10 11:54:18 PM elhi-4A01_A33_C06AN_105805.indd Page A24 5/14/10 11:54:18 PM elhi-4 /Volumes/108/GO00577/MathConnects_CA_CRM_10/Ancilliary/Application_Files/C06_.../Volumes/108/GO00577/MathConnects_CA_CRM_10/Ancilliary/Application_Files/C06_...


An

swer

s


Nam

e

Gra

de 2

52

C

hapt

er 6

Dia

gn

os

tic

Te

st

Are

you

rea

dy fo

r C

hapt

er 6

?

Wri

te y

ou

r a

ns

we

r.

1

. H

ow m

any

tens

are

in 4

0?

4

2

. H

ow m

any

tens

are

in 8

0?

8

3

. H

ow m

any

tens

are

in 5

0?

5

Us

e t

he

nu

mb

er

lin

es

. R

ou

nd

to

th

e n

ea

res

t te

n.

4

. 29

30

17

20

21

20

5

. 15

20

42

40

43

40

6

. 36

40

48

50

34

30

Su

btr

ac

t.

7

. 9

- 4

=

5

9 -

3 =

6

8

. 6

- 2

=

4

7 -

5 =

2

9

. 8

- 6

=

2

7 -

6 =

1

So

lve

.

10

. A

dela

has

12

anim

al s

ticke

rs. I

f she

giv

es 5

to J

oe,

how

man

y st

icke

rs w

ill s

he h

ave

left?

7

stic

kers

6

051_

074_

C06

EM

_105

805.

indd

Pag

e 52

5/1

0/10

5:4

8:24

PM

s-0

87/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_10/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

pygp

Chapter Resources

Gra

de 2

53

C

hapt

er 6

Nam

e

Ch

ap

ter

Pre

tes

t

Su

btr

ac

t. [L

esso

ns 6

.1, 6

.1, 6

.2, 6

.2, 6

.6, a

nd 6

.6]

1

.

50

2.

70

3

.

18-

40

- 4

0 -

2

10

30

16

4

.

64

5.

2

4 6

.

57

- 5

0 -

15

- 1

414

9

43

Su

btr

ac

t. R

eg

rou

p i

f y

ou

ne

ed

to

. [L

esso

ns 6

.3 a

nd 6

.5]

7

.

33

8.

7

5 9

.

41

-

7 -

4

-

826

71

33

Su

btr

ac

t. C

he

ck

by

ad

din

g.

Sh

ow

yo

ur

wo

rk.

[Les

sons

6.5

, 6.6

, and

6.7

]

10

. 18

- 7

=

11

11 +

7 =

18

11

. 52

- 3

9 =

13

13

+ 3

9 =

52

Ro

un

d e

ac

h n

um

be

r to

th

e n

ea

res

t te

n.

Es

tim

ate

th

e d

iffe

ren

ce

. [L

esso

n 6.

9]

12

. 31

- 1

9 30

-

20 =

10

13

. 75

- 2

9 80

-

30 =

50

6

051_

074_

C06

EM

_105

805.

indd

Pag

e 53

5/1

0/10

5:4

8:25

PM

s-0

87/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_10/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Answers (Diagnostic Test, Chapter Pretest)C

opyr

ight

© M

acm

illan

/McG

raw

-Hill

, a d

ivis

ion

of T

he M

cGra

w-H

ill C

ompa

nies

, Inc

.


P rinter P DF


pygp

Chapter Resources

Gra

de 2

55

C

hapt

er 6

Nam

e

Vo

ca

bu

lary

Te

st

Wri

te t

he

co

rre

ct

wo

rd i

n t

he

bla

nk

. U

se

th

e w

ord

s

fro

m t

he

bo

x.

estim

ate

inve

rse

oper

atio

nsdi

ffere

nce

coun

t bac

k

subt

ract

regr

oup

roun

d

1

. T

o su

btr

act

mea

ns to

take

aw

ay o

r fin

d th

e di

ffere

nce.

2

. T

o co

unt 5

, 4, 3

mea

ns to

co

un

t b

ack

.

3

. If

you

re

grou

p 1

2 on

es, y

ou c

an m

ake

1 te

n an

d 2

ones

.

4

. A

dditi

on a

nd s

ubtr

actio

n ar

e op

posi

tes,

so

they

are

cal

led

inve

rse

oper

atio

ns

.

5

. Y

ou c

an

esti

mat

e if

you

do

not n

eed

an e

xact

num

ber.

6

. W

hen

you

rou

nd

, you

can

cha

nge

34 to

30

to m

ake

your

m

ath

easi

er.

7

. T

he d

iffe

ren

ce is

the

answ

er to

a s

ubtr

actio

n pr

oble

m.

6

051_

074_

C06

EM

_105

805.

indd

Pag

e 55

5/1

0/10

5:4

8:27

PM

s-0

87/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_10/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Nam

e

Gra

de 2

54

C

hapt

er 6

Mid

-Ch

ap

ter

Te

st

Su

btr

ac

t. R

eg

rou

p i

f y

ou

ne

ed

to

. [L

esso

n 6.

3]

1

.

32

2.

55

-

8

-

924

46

Wri

te a

nu

mb

er

se

nte

nc

e t

o s

olv

e.

3

. Ja

ckie

buy

s tw

o go

ldfis

h at

the

stor

e. S

he h

as s

ix m

ore

at

hom

e. H

ow m

any

gold

fish

does

she

hav

e in

all?

[Les

son

6.4]

2

+

6

=

8 g

oldf

ish

4

. B

rian’

s D

eli h

ad 2

9 pi

ckle

s. T

hey

sold

13

for

lunc

h. H

ow m

any

pick

les

are

left

to s

ell?

[Les

son

6.4]

29

–

13

=

16 p

ickl

es

Su

btr

ac

t. F

ill

in t

he

cir

cle

fo

r th

e c

orr

ec

t a

ns

we

r.

[Les

son

6.1

and

6.2]

6

5

. 80

- 2

0 =

?

100

p

roce

du

ral

erro

r

60

corr

ect

40

gues

s/co

nce

ptu

al

50

gues

s/co

nce

ptu

al

6

. 78

- 2

0 =

?

50

gues

s/co

nce

ptu

al

98

pro

ced

ura

l er

ror

76

pro

ced

ura

l er

ror

58

corr

ect

051_

074_

C06

EM

_105

805.

indd

Pag

e 54

5/1

0/10

5:4

8:26

PM

s-0

87/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_10/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Answers (Mid-Chapter Test, Vocabulary Test)C

opyright © M

acmillan/M

cGraw


he McG

raw-H

ill Com

panies, Inc.


P rinter P DF

An

swer

s


pygp

Chapter Resources

Gra

de 2

57

C

hapt

er 6

Nam

e

Ora

l A

ss

es

sm

en

t R

es

po

ns

e S

he

et

1

. 20

2

. 26

3

. 22

4

. 13

5

. 43

6

. 22

7

. 25

8

. 25

+ 2

9 =

54

9

. A

bou

t 20

10

. 4

– 2

= 2

ap

ple

s

6

051_

074_

C06

EM

_105

805.

indd

Pag

e 57

5/1

0/10

5:4

8:28

PM

s-0

87/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_10/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

pygp

Chapter Resources

Gra

de 2

59

C

hapt

er 6

Nam

e

1

. 6

– 4

= 2

6

0 –

40 =

20

2

0 +

40

= 6

0

2

. 32

– 7

= 2

5

3

. 26

– 1

8 =

8

4

. 2

021

2223

2425

2627

2829

30

3132

3334

3536

3738

394

0

3

9 –

18 =

21

esti

mat

e =

20

4

0 –

20 =

20

5

. 10

– 5

= 5

mar

kers

P

ictu

res

wil

l va

ry.

Lis

ten

ing

As

se

ss

me

nt

Re

sp

on

se

Sh

ee

t6

051_

074_

C06

EM

_105

805.

indd

Pag

e 59

5/1

0/10

5:4

8:28

PM

s-0

87/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_10/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Answers (Oral & Listening Assessment Response Sheets)C

opyr

ight

© M

acm

illan

/McG

raw

-Hill

, a d

ivis

ion

of T

he M

cGra

w-H

ill C

ompa

nies

, Inc

.


P rinter P DF


pygp

Chapter Resources

Gra

de 2

63

C

hapt

er 6

Nam

e

Ch

ap

ter

Te

st,

Fo

rm 1

(c

ontin

ued)

Fil

l in

th

e c

irc

le f

or

the

co

rre

ct

an

sw

er.

6

7

. Y

our

num

ber

sent

ence

is

39

- 1

2 =

27.

Whi

ch

prob

lem

wou

ld y

ou u

se to

ch

eck

your

sub

trac

tion?

[L

esso

n 6.

7]

27

+ 3

9 p

roce

du

ral

erro

r

27

+ 1

2 co

rrec

t

39

- 2

7 co

nce

ptu

al e

rror

12

+ 3

9 gu

ess

8

. A

bout

how

muc

h is

52

- 1

3?

Rou

nd to

the

near

est t

en.

[Les

son

6.9]

60

pro

ced

ura

l er

ror

30

gues

s

38

con

cep

tual

err

or

40

corr

ect

9

. A

bout

how

muc

h is

21

- 1

9?

Rou

nd to

the

near

est t

en.

[Les

son

6.9]

0

corr

ect

1

gues

s

40

pro

ced

ura

l er

ror

10

con

cep

tual

err

or

10

. T

here

are

28

flow

ers

in th

e m

eado

w. T

here

are

17

in th

e ga

rden

. How

man

y flo

wer

s ar

e th

ere

in a

ll? [L

esso

n 6.

8]

50

con

cep

tual

err

or

11

gues

s

45

corr

ect

48

pro

ced

ura

l er

ror S

TOP

051_

074_

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e 63

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s_C

A_C

RM

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ry/A

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Nam

e

Gra

de 2

62

C

hapt

er 6

Ch

ap

ter

Te

st,

Fo

rm 1

1

.

80

-

30

110

p

roce

du

ral

erro

r

20

con

cep

tual

err

or

50

corr

ect

40

gues

s

6

3

.

55-

30

85

pro

ced

ura

l er

ror

35

con

cep

tual

err

or

45

gues

s

25

corr

ect

2

.

48 -

5

45

con

cep

tual

err

or

43

corr

ect

53

pro

ced

ura

l er

ror

98

gues

s

4

.

23

- 7

19

gues

s

16

corr

ect

30

con

cep

tual

err

or

20

pro

ced

ura

l er

ror

Su

btr

ac

t. F

ill

in t

he

cir

cle

fo

r th

e c

orr

ec

t a

ns

we

r.

[Les

sons

6.1

, 6.2

, 6.2

, 6.3

, 6.5

, and

6.6

]

5

.

31 -

6

25

corr

ect

35

gues

s

13

con

cep

tual

err

or

37

pro

ced

ura

l er

ror

6

.

64-

58

10

gues

s

122

p

roce

du

ral

erro

r

6

corr

ect

2

con

cep

tual

err

or

GO

ON

051_

074_

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EM

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805.

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Pag

e 62

5/1

0/10

5:4

8:29

PM

s-0

87/V

olum

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08/G

O00

577/

Mat

hCon

nect

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illia

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pplic

atio

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C06

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Answers (Chapter Test Form I)C

opyright © M

acmillan/M

cGraw


he McG

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ill Com

panies, Inc.


P rinter P DF

An

swer

s


Nam

e

Gra

de 2

64

C

hapt

er 6

Ch

ap

ter

Te

st,

Fo

rm 2

A

Su

btr

ac

t. F

ill

in t

he

cir

cle

fo

r th

e c

orr

ec

t a

ns

we

r.

[Les

sons

6.3

, 6.5

, 6.2

, 6.1

, 6.6

, and

6.2

]

6

2

.

15 -

3

10

gues

s

12

corr

ect

8

pro

ced

ura

l er

ror

18

con

cep

tual

err

or

1

.

31 -

4

35

pro

ced

ura

l er

ror

27

corr

ect

50

con

cep

tual

err

or

25

gues

s

4

.

50-

30

80

con

cep

tual

err

or

15

pro

ced

ura

l er

ror

30

gues

s

20

corr

ect

3

.

49-

30

19

corr

ect

46

pro

ced

ura

l er

ror

15

con

cep

tual

err

or

79

gues

s

6

.

48-

20

28

corr

ect

68

pro

ced

ura

l er

ror

46

gues

s

25

con

cep

tual

err

or

GO

ON

5

.

49-

25

25

pro

ced

ura

l er

ror

24

corr

ect

74

gues

s

37

con

cep

tual

err

or

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C06

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pygp

Chapter Resources

Gra

de 2

65

C

hapt

er 6

Nam

e

Ch

ap

ter

Te

st,

Fo

rm 2

A

(con

tinue

d)

Fil

l in

th

e c

irc

le f

or

the

co

rre

ct

an

sw

er.

6

7

. T

here

are

19

peac

hes

in th

e ba

sket

. Mr.

Kee

l buy

s ni

ne

of th

em. H

ow m

any

peac

hes

are

still

in th

e ba

sket

? [L

esso

n 6.

8]

10

corr

ect

12

con

cep

tual

err

or

28

gues

s

30

pro

ced

ura

l er

ror

9

. Y

our

num

ber

sent

ence

is

52

- 1

9 =

33.

Whi

ch

prob

lem

wou

ld y

ou u

se to

ch

eck

your

sub

trac

tion?

[L

esso

n 6.

7]

33

- 1

9 co

nce

ptu

al e

rror

33

+ 5

2 p

roce

du

ral

erro

r

33

+ 1

9 co

rrec

t

19 +

52

gues

s

8

. E

ric h

as 1

4 ba

seba

ll ca

rds.

H

e bu

ys s

ix m

ore.

Wha

t co

uld

you

do to

find

out

ho

w m

any

card

s E

ric h

as?

[Les

son

6.4]

sub

trac

t

co

nce

ptu

al e

rror

est

imat

e th

e di

ffere

nce

co

nce

ptu

al e

rror

writ

e a

num

ber

sent

ence

co

rrec

t

find

a p

atte

rn

co

nce

ptu

al e

rror

10

. A

bout

how

muc

h is

19

- 1

1?

Rou

nd to

the

near

est t

en.

[Les

son

6.9]

0

gues

s

1

con

cep

tual

err

or

40

pro

ced

ura

l er

ror

10

corr

ect

STO

P

051_

074_

C06

EM

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805.

indd

Pag

e 65

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PM

u-s

073

/Vol

umes

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athC

onne

cts_

CA

_CR

M_1

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File

s/C

06_.

..

Answers (Chapter Test Form 2A)C

opyr

ight

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illan

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raw

-Hill

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he M

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ompa

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.


P rinter P DF


pygp

Chapter Resources

Gra

de 2

67

C

hapt

er 6

Nam

e

6C

ha

pte

r T

es

t, F

orm

2B

(c

ontin

ued)

7

. 25

- 1

5 =

10.

Whi

ch w

ould

yo

u us

e to

che

ck?

[Les

son

6.7]

25

+ 8

gu

ess

15

- 1

0 co

nce

ptu

al e

rror

10

+ 1

5 co

rrec

t

8

. A

bout

how

muc

h is

22

- 1

1?

Rou

nd to

the

near

est t

en.

[Les

son

6.9]

33

pro

ced

ura

l er

ror

10

corr

ect

11

gues

s

9

. A

bout

how

muc

h is

42

- 3

1?

Rou

nd to

the

near

est t

en.

[Les

son

6.9]

10

corr

ect

72

pro

ced

ura

l er

ror

22

gues

s

10

. T

here

are

6 tr

ees

in th

e sc

hool

yar

d.T

here

are

4 tr

ees

at h

ome.

H

ow m

any

tree

s ar

e th

ere

in a

ll? [L

esso

n 6.

8]

2

pro

ced

ura

l er

ror

8

gues

s

10

corr

ect

Fil

l in

th

e c

irc

le f

or

the

co

rre

ct

an

sw

er.

11

. T

om h

as 2

dog

s. A

nn h

as

2 do

gs. H

ow c

ould

you

find

ho

w m

any

tota

l dog

s th

ere

are?

[Les

son

6.4]

est

imat

e th

e di

ffere

nce

writ

e a

num

ber

sent

ence

reg

roup

con

cep

tual

err

orco

nce

ptu

al e

rror

corr

ect

corr

ect

con

cep

tual

err

orco

nce

ptu

al e

rror

STO

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051_

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Pag

e 67

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5:4

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PM

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577/

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hCon

nect

s_C

A_C

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C06

_...

Nam

e

Gra

de 2

66

C

hapt

er 6

Ch

ap

ter

Te

st,

Fo

rm 2

B

Su

btr

ac

t. F

ill

in t

he

cir

cle

fo

r th

e c

orr

ec

t a

ns

we

r.

[Les

sons

6.1

, 6.2

, 6.2

, 6.3

, 6.5

, and

6.6

]

6

1

.

30-

20

10

corr

ect

20

pro

ced

ura

l er

ror

50

con

cep

tual

err

or

2

.

22 -

2

24

con

cep

tual

err

or

20

corr

ect

21

pro

ced

ura

l er

ror

3

.

45-

20

42

pro

ced

ura

l er

ror

25

corr

ect

65

con

cep

tual

err

or

4

.

25 -

6

19

corr

ect

21

pro

ced

ura

l er

ror

31

con

cep

tual

err

or

5

.

18 -

6

24

con

cep

tual

err

or

11

pro

ced

ura

l er

ror

12

corr

ect

6

.

32-

17

49

con

cep

tual

err

or

12

pro

ced

ura

l er

ror

15

corr

ect

GO

ON

051_

074_

C06

EM

_105

805.

indd

Pag

e 66

5/1

0/10

5:4

8:31

PM

s-0

87/V

olum

es/1

08/G

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577/

Mat

hCon

nect

s_C

A_C

RM

_10/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Answers (Chapter Test Form 2B)C

opyright © M

acmillan/M

cGraw


he McG

raw-H

ill Com

panies, Inc.


P rinter P DF

An

swer

s


Nam

e

Gra

de 2

68

C

hapt

er 6

Ch

ap

ter

Te

st,

Fo

rm 2

C

Su

btr

ac

t. [L

esso

ns 6

.2, 6

.5, 6

.6, 6

.1, 6

.3, 6

.2, 6

.6, a

nd 6

.6]

1.

69

2

.

38-

30

-

539

33

3.

74

4

.

60-

21

- 5

053

10

5.

52

6

.

36-

38

-

914

27

7.

49

8

.

82-

33

- 2

716

55

GO

ON

6

051_

074_

C06

EM

_105

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Pag

e 68

5/1

0/10

5:4

8:32

PM

s-0

87/V

olum

es/1

08/G

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577/

Mat

hCon

nect

s_C

A_C

RM

_10/

Anc

illia

ry/A

pplic

atio

n_F

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C06

_...

pygp

Chapter Resources

Gra

de 2

69

C

hapt

er 6

Nam

e

Ch

ap

ter

Te

st,

Fo

rm 2

C

(con

tinue

d)

Su

btr

ac

t.

9

.

51-

36

15

Che

ck b

y ad

ding

. [Le

sson

6.7

]

15

+

36

=

51

10

. A

bout

how

muc

h is

49

- 2

3? R

ound

to th

e ne

ares

t ten

. [L

esso

n 6.

9]

30

11

. R

on a

nd h

is d

ad p

laye

d 18

gam

es o

f che

cker

s in

a m

onth

. Ron

w

on 1

2 ga

mes

. How

man

y ga

mes

did

his

dad

win

? [L

esso

n 6.

8]

6 ga

mes

12

. A

bout

how

muc

h is

49

- 3

8? R

ound

to th

e ne

ares

t ten

. [L

esso

n 6.

9]

10

13

. T

here

wer

e 13

trea

ts in

the

box.

The

pup

py a

te s

even

of t

hem

. H

ow m

any

trea

ts a

re le

ft in

the

box?

Writ

e a

num

ber

sent

ence

to

sol

ve. [

Less

on 6

.4]

13

–

7

=

6

STO

P

6

051_

074_

C06

EM

_105

805.

indd

Pag

e 69

5/1

0/10

5:4

8:32

PM

s-0

87/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_10/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Answers (Chapter Test Form 2C)C

opyr

ight

© M

acm

illan

/McG

raw

-Hill

, a d

ivis

ion

of T

he M

cGra

w-H

ill C

ompa

nies

, Inc

.


P rinter P DF


pygp

Chapter Resources

Gra

de 2

71

C

hapt

er 6

Nam

e

Ch

ap

ter

Te

st,

Fo

rm 2

D

(con

tinue

d)6

Es

tim

ate

th

e d

iffe

ren

ce

.

Ro

un

d t

o t

he

ne

are

st

ten

. [L

esso

n 6.

9]

9

. A

bout

how

muc

h is

39

- 1

1?

Rou

nd to

the

near

est t

en.

30

10

. A

bout

how

muc

h is

19

- 1

1?

Rou

nd to

the

near

est t

en.

10

So

lve

.

11

. T

here

are

5 d

ogs

at th

e pe

t sto

re.

The

re a

re 1

5 do

gs a

t the

she

lter.

H

ow m

any

tota

l dog

s ar

e th

ere?

[Les

son

6.8]

20 d

ogs

Wri

te a

nu

mb

er

se

nte

nc

e t

o s

olv

e.

12

. P

at’s

mom

buy

s 7

appl

es. P

at e

ats

2.

How

man

y ap

ples

are

ther

e no

w?

[Les

son

6.4]

7

–

2

= 5

app

les

Su

btr

ac

t. C

he

ck

by

ad

din

g.

[Les

son

6.7]

13

.

35-

19

16

16

+

19

=

35

STO

P

051_

074_

C06

EM

_105

805.

indd

Pag

e 71

5/1

0/10

5:4

8:33

PM

s-0

87/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_10/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Nam

e

Gra

de 2

70

C

hapt

er 6

Ch

ap

ter

Te

st,

Fo

rm 2

D

Su

btr

ac

t. [L

esso

ns 6

.5, 6

.2, 6

.6, 6

.3, 6

.1, 6

.2, 6

.5, a

nd 6

.2]

1.

26

2

.

39 -

2

-

524

34

3.

57

4

.

33-

41

- 1

916

14

5.

70

6

.

88-

20

- 4

050

48

7.

16

8

.

58

- 9

-

20

7

38

GO

ON

6

051_

074_

C06

EM

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805.

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Pag

e 70

5/1

0/10

5:4

8:33

PM

s-0

87/V

olum

es/1

08/G

O00

577/

Mat

hCon

nect

s_C

A_C

RM

_10/

Anc

illia

ry/A

pplic

atio

n_F

iles/

C06

_...

Answers (Chapter Test Form 2D)C

opyright © M

acmillan/M

cGraw


he McG

raw-H

ill Com

panies, Inc.


P rinter P DF

An

swer

s


Nam

e

Gra

de 2

72

C

hapt

er 6

Cu

mu

lati

ve

Sta

nd

ard

ize

d T

es

t P

rac

tic

e

Wri

te t

he

nu

mb

ers

in

ord

er

fro

m l

ea

st

to g

rea

tes

t.

1

. 56

, 7, 4

2, 3

9, 2

4 7

24

39

42

56

[Les

son

1.6]

Co

mp

lete

th

e f

ac

t fa

mil

y.

2

. 14

+ 5

=

19

19

-

5 =

14

5

+ 1

4 =

19

[Les

son

3.7]

19

- 1

4 =

5

Ad

d o

r s

ub

tra

ct

to s

olv

e.

[Les

son

5.4,

6.6

, 2.7

, 3.2

, 3.2

, and

5.6

]

3.

2

6 4

.

34 +

7

- 1

233

22

5.

4 6

.

14

6

- 1

4

+ 3

0 13

7.

1

1 8

.

29+

11

+ 1

522

44

GO

ON

6

051_

074_

C06

EM

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indd

Pag

e 72

5/1

0/10

5:4

8:33

PM

s-0

87/V

olum

es/1

08/G

O00

577/

Mat

hCon

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Answers (Cumulative Standardized Test Practice)C

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