Five-Minute Check (over Chapter 7)

Main Idea and Vocabulary

Key Concept: Customary Units of Length

Example 1:Draw a Line Segment

Example 2:Measure Length

Example 3: Change Larger Units to Smaller Units

Example 4:Change Smaller Units to Larger Units

Example 5: Change Units to Solve a Problem

• inch

• foot

• yard

• mile

• Change units of length and measure length in the customary system.

Animation: Length in the Customary System

Draw a Line Segment

Answer:

Draw a line segment measuring inches.

Draw a line segment from 0 to .

1. A

2. B

3. C

4. D0% 0%0%0%

Which line segment is inches long?

A.

B.

C.

D.

RUBBER BANDS Measure the length of the rubber band to the nearest half, fourth, or eighth inch.

Measure Length

and

Measure Length

1. A

2. B

3. C

4. D0% 0%0%0%

CRAYONS Measure the length of the crayon to the nearest half, fourth, or eighth inch.

A. B.

C. D.

Change Larger Units to Smaller Units

Complete 7 ft = ■ in.

Method 1 Use a ratio table.

You know that 1 foot is equal to 12 inches. Set up the ratio table with the measures you know.

Since 1 × 7 = 7, multiply each quantity by 7.

Change Larger Units to Smaller Units

Method 2 Select an appropriate operation.

Since 1 foot = 12 inches, multiply 7 by 12.

7 × 12 = 84

Answer: So, 7 feet = 84 inches.

1. A

2. B

3. C

4. D0% 0%0%0%

A. 48

B. 60

C. 72

D. 84

Complete 5 ft = ■ in.

Complete 27 ft = ■ yd.

Since 3 feet = 1 yard, divide 27 by 3.

27 ÷ 3 = 9

Answer: So, 27 feet = 9 yards.

Change Smaller Units to Larger Units

1. A

2. B

3. C

4. D0% 0%0%0%

A. 11

B. 27

C. 69

D. 99

Complete 33 ft = ■ yd.

A 3,600 mi B 5 mi C 3 mi D 2 mi

Vincent wants to walk a total of 5 miles. So far, he has walked 5,400 yards. Which is closest to the distance in miles that Vincent still has to walk?

Read the Item

You need to find the number of miles Vincent still has to walk.

Solve the Item

Change 5,400 yards to miles, then subtract from 5 to find how many miles Vincent still has to walk.

Change Units to Solve a Problem

Since 1,760 yards = 1 mile, divide 5,400 by 1,760.

Answer: D

5,400 ÷ 1,760 ≈ 3.07 or 3

So, Vincent has already walked about 3 miles.

Since 5 − 3 = 2, he still has 2 miles to walk.

Change Units to Solve a Problem

1. A

2. B

3. C

4. D0% 0%0%0%

A. 2 ft

B. 3 ft

C. 4 ft

D. 5 ft

Jolene bought 6 feet of rope. She used 34 inches for her science project. Which is closest to the amount of rope Jolene has left?

End of the Lesson

Five-Minute Check (over Chapter 7)

Image Bank

Math Tools

Length in the Customary System

The Metric System

1. A

2. B

3. C

4. D0% 0%0%0%

Write 35% as a fraction in simplest form.

(over Chapter 7)

A.

B.

C.

D.

1. A

2. B

3. C

4. D0% 0%0%0%

(over Chapter 7)

Write 175% as a mixed number in simplest form.

A.

B.

C.

D.

1. A

2. B

3. C

4. D0% 0%0%0%

(over Chapter 7)

A number cube with 1, 2, 3, 4, 5, and 6, one number on each face, is rolled. Find P(greater than 2). Write the answer as a fraction.

A.

B.

C.

D.

1. A

2. B

3. C

4. D0% 0%0%0%

(over Chapter 7)

A number cube with 1, 2, 3, 4, 5, and 6, one number on each face, is rolled. Find P(1, 2, or 6). Write the answer as a fraction.

A.

B.

C.

D.

1. A

2. B

3. C

4. D0% 0%0%0%

(over Chapter 7)

The winning quilt in a quilting contest had different colors of squares. There were three blue, five red, nine white, seven black, and six green squares. What fraction of the colors starts with the letter “B”? Write the fraction as a percent rounded to the nearest tenth.

A. B.

C. D.

; ;

;;

1. A

2. B

3. C

4. D0% 0%0%0%

(over Chapter 7)

A. 0.202

B. 0.22

C. 2.02

D. 2.2

Which of the following is 220% written as a decimal?