answer key • lesson 3: use problem solving...

TG • Grade 1 • Unit 14 • Lesson 3 • Answer Key 1

Answer Key • Lesson 3: Use Problem Solving Strategies

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Student Activity Book

The Children Who Traveled to Find a HardProblem (SAB pp. 458–459)

Dinner Guests * 20 plates; 16 � 4 � 20 (Possible response: Icounted on: 17, 18, 19, 20)

Shepherd* 6 sheep: 18 � 12 = or 12 � = 186 6

SAB • Grade 1 • Unit 14 • Lesson 3 Use Problem Solving Strategies458

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unt Publishing Company

Name Date

Dinner Guests

One evening the family had some dinner guests. The father wanted to set the table. He said, “There are four of us in the family,and we have sixteen guests. How many plates do we need?”

Show your work.

The family needs plates.X

Student Activity Book - Page 458

Use Problem Solving Strategies SAB • Grade 1 • Unit 14 • Lesson 3 459

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Shepherd

Jack and Tess set out from home in search of a hard problem.Soon they came to a shepherd who was sitting with 18 sheep bythe roadside. The poor shepherd was crying. Jack asked whatwas the matter.

The shepherd said, “I have a really hard problem. I am watching 18 sheep for Farmer Bob and Farmer Dan. I know that Bob gaveme 12 sheep, but I’ll never figure out how many Dan gave me: it’stoo hard!”Show your work.

Dan gave the shepherd sheep.X


*Answers and/or discussion are included in the lesson.


2 TG • Grade 1 • Unit 14 • Lesson 3 • Answer Key



Solve Problems with Larger Numbers (SAB pp. 461–464)Questions 1–4

Strategies will vary. Possible strategies are indicatedfor each problem.

1. 14 � 6 = 20 (Possible strategy: I know that14 is 10 � 4. I added 4 � 6 = 10 and 10 � 10 = 20.)

2. 25 � 7 = or � 7 = 20 (Possiblestrategy: I used the number line. I started at 25and jumped back 7 and I landed at 18.)

1818

Use Problem Solving Strategies SAB • Grade 1 • Unit 14 • Lesson 3 461

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Solv

e Pr

oble

ms

with

Lar

ger

Num

bers

Est

imat

e th

e an

swer

to

eac

h p

rob

lem

. Cir

cle

an in

terv

al. S

ho

w o

r te

ll h

ow

to

so

lve

each

pro

ble

m. W

rite

a n

um

ber

sen

ten

ce w

ith

yo

ur

answ

er.

1.Ja

ck s

olve

d a

pro

ble

m fo

r th

e sh

ephe

rd. T

he s

hephe

rd w

as v

ery

happy.

He

said

to

Jack

,“I

will

giv

e yo

u 14

pen

nies

tod

ay a

nd 6

pen

nies

tom

orro

w.”

How

man

y pen

nies

will

the

shep

herd

giv

e to

Jac

k al

toge

ther

?

The

answ

er w

ill b

e bet

wee

n 1

and

10

11

and 2

0 2

1 an

d 3

0 3

1 an

d 4

0

Num

ber

sen

tenc

e

01

23

45

67

2324

2526

2728

2930

89

1011

1213

1415

1617

1819

2021

22

Nam

e D

ate


SAB • Grade 1 • Unit 14 • Lesson 3 Use Problem Solving Strategies 462



2.The next d

ay Jack and Tess w

ent to see the shepherd

. He w

as upset b

ecause he had

25 sheep but 7 had

escaped

. How

many sheep

were left?

The answer w

ill be b

etween 1 and

10 11 and 20 21 and

30 31 and 40

Num

ber sentence

01

23

45

67

2324

2526

2728

2930

89

1011

1213

1415

1617

1819

2021

22

Nam

e D

ate


TG • Grade 1 • Unit 14 • Lesson 3 • Answer Key 3


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3. 30 � 8 = 38 (Possible strategy: I made 3 bighops of 10 on the number line and 8 morejumps makes 38.)

4. 24 � 9 = or 9 � = 24 (Possiblestrategy: I used the 100 Chart. I started at 9 andmoved down a row to 19. That’s 10. Then Icounted on to 24. That was 5 more. My answeris 15.)

1515

Use Problem Solving Strategies SAB • Grade 1 • Unit 14 • Lesson 3 463Co

pyrig

ht ©

Ken

dall

Hun

t Pub

lishi

ng C

ompa

ny

C

he

ck

-In

: Qu

es

tio

ns

3–4

3.Ja

ck and

Tes

s co

unted the

ir pen

nies

. Jac

k ha

d 30 an

d Tes

s ha

d 8. H

ow m

any pen

nies

did the

y ha

ve in

all?

The an

swer w

ill be betwee

n

1 and

10

1

1 an

d 20

2

1 an

d 30

3

1 an

d 40

Num

ber sen

tenc

e

01

23

45

67

2324

2526

2728

2930

89

1011

1213

1415

1617

1819

2021

22

Nam

e D

ate


4.The shep

herd had

24 sheep. Tess fed

9 sheep. Jack fed

the rest. How

many sheep

did

Jack feed?

The answer w

ill be b

etween 1 and

10 11 and 20 21 and

30 31 and 40

Num

ber sentence

01

23

45

67

2324

2526

2728

2930

89

1011

1213

1415

1617

1819

2021

22

Nam

e D

ate



464 SAB • Grade 1 • Unit 14 • Lesson 3 Use Problem Solving Strategies


answer key • lesson 3: use problem solving...

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