25¢

25¢

1¢

1¢1¢

25¢25¢25¢

12 12

457

8

1011

3

6

9

2+2=

804 N. 2nd Ave. E.Rock Rapids, IA 51246-1759

800-622-3070www.aop.com

MATHStudent Book

2nd Grade | Unit 10

REVIEWMATH 210

Introduction |3

1. Addition ...................................................................... 5Rounding |7Story Problems |9

Self Test 1 |11

2. Subtraction ............................................................. 13Even and Odd |14Money |15

Skill Builders |18Self Test 2 |21

3. Graphs ...................................................................... 23Digital Clocks |24Perimeter and Area |25

Addition and Subtraction |26Self Test 3 |30

4. Fractions .................................................................. 323-Digit Addition and Subtraction |34

Sensible Answers |36Self Test 4 |39

5. Patterns ................................................................... 41Solid Shapes |43Numbers |44

Story Problems |45Self Test 5 |47

LIFEPAC Test |Pull-out

| 1

Unit 10 | REVIEW

Author: Carol Bauler, B.A.

Editor: Alan Christopherson, M.S.

Media Credits: Page 3: © Kristina Afanasyeva, Hemera, Thinkstock; 10: © Marie Kelley, Hemera, Thinkstock.

804 N. 2nd Ave. E. Rock Rapids, IA 51246-1759

© MCMXCVIII by Alpha Omega Publications, Inc. All rights reserved. LIFEPAC is a registered trademark of Alpha Omega Publications, Inc.

All trademarks and/or service marks referenced in this material are the property of their respective owners.

Alpha Omega Publications, Inc. makes no claim of ownership to any trademarks and/or service marks other than

their own and their affiliates, and makes no claim of affiliation to any companies whose trademarks may be listed

in this material, other than their own.

2 |

REVIEW | Unit 10

NOTE to teachers, parents, and students:

As part of a continuing effort to improve the LIFEPAC curriculum, a new layout of this unit has been produced. The content of this unit has not changed but the page numbers referenced in the Teacher Notes of the Teacher’s Guide you are using may no longer correspond.

One option is to follow through the activities in sequence and ignore the page numbers in the original Teacher Notes. The other option is to use the updated pages for the Teacher Notes that have been included in the back of this unit. These pages can be used to direct the instructional process as the student works through the unit. All of the pages of this unit are perforated so the updated Teacher Notes pages can be easily removed and referenced as needed.

REVIEW

Nice to see you. I’m Dr. Kirke.

Come along! I am Filmore.Hey, I’m Roxie.

Let’s study!Tammy here.

Are you ready to learn?

Learn with our friends! They’ll guide you through the LIFEPACs and keep the scores for you.

Introduction | 3

Unit 10 | REVIEW

ObjectivesRead these objectives. They will tell what you will be able to do when you have finished this LIFEPAC®.

1. I can add without the carry box.2. I can round numbers to the hundreds’ place.3. I can learn rules for adding even and odd numbers.4. I can read a digital clock.5. I can learn to give sensible answers to story problems.6. I can find solid shapes in objects.7. I can review and practice the things I have learned.

4 | Introduction

REVIEW | Unit 10

1. ADDITIONWe can add three numbers in the hundreds.

Add the ones. 6 + 1 + 2 = 9

Add the tens. 4 + 2 + 0 = 6

Add the hundreds. 2 + 3 + 2 = 7

The answer is seven hundred sixty-nine.

Add.

1.1

Write the answer to the last problem in number words.

_________________________________________________

246 321 + 202

769

132 354 + 511

423 371 + 105

412 250 + 330

331 142 + 202

263 214 + 321

425 110 + 423

216 360 + 100

314 104 + 260

261 204 + 310

330 105 + 212

Section 1 | 5

Unit 10 | REVIEW

Sometimes we do not need to carry when we add. Sometimes we do need to carry when we add.

do not carry do carry

There are no carry boxes in these problems. You must decide if you need to carry. When you carry a number, put the number in the same place as shown in the example.

36 + 42

78

538 + 241

779

1 47 + 86

133

1 379 + 205

584

Add.

1.2 56 + 34

72 + 81

45 + 66

27 + 45

52 + 36

29 + 63

384 + 509

432 + 331

549 + 376

343 + 252

654 + 248

278 + 346

591 + 235

446 + 129

285 + 475

396 + 461

6 | Section 1

REVIEW | Unit 10

Rounding

We can round a number by finding its nearest tens’ number. A number rounded to tens always ends in zero (0). We want to round 58 to the tens’ place. We find 58 on the number line. The tens’ number 58 is nearest to is 60. We can round 58 to 60.

0

5

20

25

10

15

30

35

40

45

50

55

70

75

60

65

80

85

90

95

10058

Round these numbers to the tens’ place.

1.3 42 ____________ 21 ____________ 94 ____________

61 ____________ 18 ____________ 87 ____________

76 ____________ 9 ____________ 33 ____________

We want to round 45 to the tens’ place. 45 is exactly between 40 and 50. If a number ends in 5, we round to the next higher tens’ number. We can round 45 to 50.

1.4 Round these numbers to the tens’ place.

75 ____________ 92 ____________ 15 ____________

34 ____________ 85 ____________ 39 ____________

63 ____________ 41 ____________ 65 ____________

1.5 Circle the numbers in the tens’ place.

6 7 8 4 2 5 4 8 5 5 3 7 9 2

Section 1 | 7

Unit 10 | REVIEW

Look at the new number line. How is it different from the number line shown before activity 1.3? The number after 999 is 1,000. We say “one thousand.” Count by 100’s to 1,000. Count by 50’s to 1,000.

We want to round 647 to the nearest 100’s. We find 647 on the number line. The hundreds’ number 647 is nearest to is 600. We can round 647 to 600.

If a number ends in 50, it is always rounded to the next higher number. We can round 650 to 700.

0

50

200

250

100

150

300

350

400

450

500

550

700

750

600

650

800

850

900

950

1,000647

Round the numbers to the nearest 100’s. Follow the steps.

1.6 326 __________ 872 __________ 989 __________

425 __________ 103 __________ 846 __________

350 __________ 275 __________ 718 __________

615 __________ 555 __________ 381 __________

313 __________ 949 __________ 251 __________

1.7 Circle the numbers in the hundreds’ place.

4 3 6 8 5 2 7 9 3 0 6 4 5 9 7

8 | Section 1

REVIEW | Unit 10

Story Problems

Read the story. Write the answer.

1.8 Jodie and Jeremy were going to summer camp.

They were leaving at 6:30 in the morning.

Was that A.M. or P.M? ____________

There were four buses going to camp.

The first bus carried 39 children, the

second bus 51, the third bus 48, and

the fourth bus 42. How many children

were there altogether? ____________

Jeremy counted mosquitoes every night.

He counted 124 the first night, 58 the

second night, and 137 the third night.

How many mosquitoes did he count

altogether? ____________

Jodie and Jeremy each saw a snake.

Jodie said her snake was 14 inches long.

Jeremy said his snake was 1 foot long.

Who saw the longer snake? ____________

Section 1 | 9

Unit 10 | REVIEW

Before you take the Self Test, study what you have read and done. The Self Test will check what you remember.

There were 10 children in the bunk house.

One night, they cooked hamburgers.

Each child wanted 2 hamburgers.

How many hamburgers did they cook? ____________

The last night, all of the children that went

to camp roasted marshmallows. Each child

ate two marshmallows. How many

marshmallows were eaten altogether? ____________

When Jodie and Jeremy arrived home,

they each ate 1__6 of an apple pie.

How much pie did they eat altogether? ____________

10 | Section 1

REVIEW | Unit 10

SELF TEST 1Each answer = 1 point, except where otherwise noted

1.01 Add. Remember to carry.

1.02 Write in number words.

345 ____________________________________________

1.03 Round to the nearest 100.

567 _________ 312 _________ 750 _________

46+ 51

89+ 65

18+ 32

63+ 22

78+ 35

563+ 215

675+ 227

381+ 462

325 141+ 520

244 302+ 451

Section 1 | 11

Unit 10 | REVIEW

1.04 Write the answer. (2 points)

There were 237 children at summer

camp and each one wrote two letters.

How many letters were written

altogether? ____________

Teacher Check

_____________Initial Date

13

16My Score

12 | Section 1

REVIEW | Unit 10

25¢

25¢

1¢

1¢1¢

25¢25¢25¢

12 12

457

8

1011

3

6

9

2+2=

804 N. 2nd Ave. E.Rock Rapids, IA 51246-1759

800-622-3070www.aop.com

MATHStudent Book

ISBN 978-1-58095-380-1

9 7 8 1 5 8 0 9 5 3 8 0 1

MAT0210 – Feb ‘17 Printing