Math addition and subtraction l2

Previously published as Reading & Math Jumbo Workbook Grade 2, Success with Addition and Subtraction Grade 2 and Success with Math Grade 2 by Scholastic Inc.. Addition and Subtraction Ô/

Trang 2

This book belongs to

Addition and Subtraction

Trang 3

Previously published as Reading & Math Jumbo Workbook Grade 2,

Success with Addition and Subtraction Grade 2 and Success with Math Grade 2

by Scholastic Inc

This edition published by Scholastic Education International (Singapore) Private Limited

A division of Scholastic Inc

No part of this publication may be reproduced in whole or in part, or stored in a retrievalsystem, or transmitted in any form or by any means, electronic, mechanical, photocopying,recording, or otherwise without the written permission of the publisher For information

regarding permission, write to:

Scholastic Education International (Singapore) Private Limited

81 Ubi Avenue 4 #02-28 UB.ONE Singapore 408830customerservice@scholastic.com.sg

First edition 2013ISBN 978-981-07-1365-2

Trang 4

Helping your child build essential skills is easy!

These teacher-approved activities have been specially developed to make learning ERWKDFFHVVLEOHDQGHQMR\DEOH2QHDFKSDJH\RX¶OO¿QG

7KLVERRNDOVRFRQWDLQV

Instant assessment to ensure

your child really masters the skills

&RPSOHWLRQFHUWL¿FDWH to celebrate your

child’s leap in learning

Focus Skill

The focus of each activity

page is clearly indicated InstructionsThe read-aloud instructions

are easy for your child tounderstand

Meaningful learning

Each activity has been

carefully designed to

make your child’s learning

meaningful and fun

Motivational stickers to mark the

milestones of your child’s learning path

Addition and Subtraction Ô/

On another piece of paper, write three more problems that have a zero in the sum.

Add Then trace the mole’s path to the top The mole must travel through tunnels with a zero in the sum.

406 609

415 384 452

342 531

adding 3-digit numbers with regrouping 'DWH

L2 Addition and Subtraction.indd 26

Instant assessment to ensure

Additio n and Subtraction

Practice Test

Addition and SubtractionÔ/ 71

Fill in the bubble next to the correct answer.

for cheese than veggie pizza?

D 31

pepperoni than sausage pizza?

B 30

for mushroom than onion pizza?

ear i n ng

To be place with L2 mascot

ear i n ng

Congratulations!

11/10/12 7:56 AM

Trang 5

subtracting from 12 or less .31

subtracting from 14 or less 32–33 subtracting from 10 through 18 .34–37 subtracting from 20 with regrouping .38

subtracting 2-digit numbers without regrouping .39–45 subtracting 3-digit numbers without regrouping .46

subtracting 2-digit numbers with regrouping .47–52 subtracting 3-digit numbers with regrouping 53

subtracting 3-digit numbers with zero .54

adding and subtracting through 18 .55

adding and subtracting 2-digit numbers with regrouping .56–58 adding and subtracting 3-digit numbers with regrouping 59–65 word problems 66–68 Addition and Subtraction Practice Test .69–74 Answer Key 75–78 Certificate 79

Stickers 80

Addition and Subtraction 5

adding to 10 6

adding with sums through 18 7–10 number patterns .11–12 adding 1- and 2-digit numbers without regrouping .13

adding 1- and 2-digit numbers .14

adding 2-digit numbers without regrouping .15–16 adding 3-digit numbers without regrouping .17

regrouping tens to ones .18

regrouping tens to hundreds .19

regrouping hundreds to tens .20

adding three addends 21

adding multiple addends 22

adding 2-digit numbers with regrouping .23

adding 2-digit numbers with regrouping - multiple addends 24

adding 2- and 3-digit numbers with regrouping .25

adding 3-digit numbers with regrouping .26

addition word problems 27

subtracting from 9 or less .28

subtracting from 10 or less .29–30

Trang 6

Understanding basic addition and subtraction facts are important

real-life skills We probably add or subtract something every day

:KHQ\RXEX\WKLQJV\RXQHHGWR¿JXUHRXWKRZPXFKPRQH\\RX

need to pay and how much money you will get back The activities

that follow will give your child lots of practice in these important

skills with one, two and three digits.

What to do

These activity pages provide many opportunities for your child to

practice addition and subtraction with and without regrouping

When you regroup in addition, you carry over from the right-hand

FROXPQWRWKHOHIWKDQGFROXPQ)RUH[DPSOH

In subtraction problems that require that your child regroup

numbers, he or she will borrow from the number to the left

1

25 – 9 16

1 1

Addition and Subtraction

Trang 7

6 Addition and Subtraction Ô/

Add Complete the puzzle using number words.

Trang 8

Trang 9

adding with sums through 18

5.

9 + 7

11.

10 + 8

9.

7 + 7

6.

3 + 6

Trang 10

5.

9 + 5

9.

7 + 3

Trang 11

5.

12 + 5

9.

9 + 7

Trang 12

Trang 13

Trang 14

DGGLQJDQGGLJLWQXPEHUV

without regrouping

1 Solve the problems under

Across and Up

2 Find each number pair on the graph

Make a dot for each where their

Trang 15

19 + 9

17 + 9

4 + 8

16 + 6

11 + 9

7 + 4

12 + 7

12 + 9

1 + 9

2 + 8

11 + 7

16 + 22

24 + 7

10 + 24

31 + 11

32 + 9

22 + 13

41 + 21

26 + 6

37 + 31

27 + 6

20 + 21

14 + 9

16 + 5

15 + 5

Solve the problems Color the shapes using the code Color the other shapes with the colors of your choice.

1 to 30 = red 31 to 99 = blue

Name two numbers that when added together equal 27.

BBBBBBBBBB BBBBB BBBBBBBBBB BBBBB

'DWH

Trang 16

Add.

4 For each sum that is an even number, write its letter below in order.

How much of the earth is covered by water?

_ _ _ _ _ — _ _ _ _ _ _ _

5 For each sum that is an odd number, write its letter below in order.

What is the biggest ocean?

74 + 23

35 + 23

33 + 34

63 + 13

34 + 45

12

+ 34

54 + 30

14 + 32

44 + 45

24 + 34

12 + 36

25 + 72

43

+ 15

31 + 24

23 + 42

22 + 24

20 + 20

DGGLQJGLJLWQXPEHUVZLWKRXWUHJURXSLQJ 'DWH

Trang 17

$GG0DWFKWKHÀRZHUVZLWKWKHVDPHVXP

52 + 36

23 + 22

18 + 70

11 + 34

62 + 35

51 + 18

14 + 11

55 + 42

13

+ 12

DGGLQJGLJLWQXPEHUVZLWKRXWUHJURXSLQJ

43 + 26

'DWH

Trang 18

adding 3-digit numbers without regrouping

Add Circle each even sum to learn facts about the tiger Draw a square around each odd sum to learn about the octopus Hint: Look in the ones place.

423 + 173

1 the largest cat species

325

+ 552

3 has three hearts

101 + 561

5 can weigh up to 353 kgs

805 + 163

7 is a carnivore

609 + 290

9 can regrow lost limbs

384 + 611

has four pairs of arms

257 + 312

4 hides by changing color

570 + 408

6 hunts at night

445 + 151

8 is endangered

314 + 183

10 KDVDVRIWÀH[LEOHERG\

'DWH

Trang 19

regrouping tens to ones

Look at the number on each chick Write the number of tens and ones

on the egg Then trade one ten for ten ones.

Trang 20

5HJURXSWHQVLQWRKXQGUHGV5HPHPEHUWHQV KXQGUHG:ULWH the number of hundreds and the number of remaining tens.

Write the number.

Trang 21

Trang 22

Addition and SubtractionÔ/

Add Write the sum on each bowl.

Trang 23

Find the sums of the three addends in the rows across and down The answer circles are numbered.

You can do it!

7

7 16

7 6

Trang 24

$GG7KHQFLUFOHHDFKER[ZLWKDQRGGVXPWRKHOSWKHER\¿QGKLVZD\

to the book (Hint: Remember to look in the ones place.)

47 + 24

31 + 59

72 + 18

+ 49

DGGLQJGLJLWQXPEHUVZLWKUHJURXSLQJ 'DWH

Trang 25

DGGLQJGLJLWQXPEHUV

with regrouping — multiple addends

3 1 km

49 km

beach mountains

1 Add the distance of each route from

the house to the beach.

Add the distance of each route from the house to the mountains.

Trang 26

207 + 545

126 + 89

328 + 448

257 + 458

547

+ 129

624 + 127

108 + 107

229 + 418

258

+ 268

379 + 346

417 + 209

153 + 497

6DQG\DQG0DQG\DUHKDYLQJDWZLQSDUW\7KHUHDUHVL[VHWVRIWZLQV EXWRQO\RQHVHWRILGHQWLFDOWZLQV7R¿QGWKHLGHQWLFDOWZLQVVROYHWKH addition problems under each person The identical twins have the same answer.

Trang 27

On another piece of paper, write three more problems that have a zero in the sum.

Add Then trace the mole’s path to the top The mole must travel through tunnels with a zero in the sum.

406 + 295

609 + 295

415 + 387

384 + 276

452 + 468

342 + 488

531

+ 269

325 + 197

570 + 182

165 + 288

644 + 188

605 + 237

763 + 178

467 + 289

278 + 693

477 + 289

227 + 276

176 + 424

adding 3-digit numbers with regrouping 'DWH

Trang 28

Answer the questions.

Matthew plays the horn at different places

Last year, he played at 5 school events,

12 parties and 7 baseball games.

addition word problems

At what type of event did Matthew

play the most?

If Matthew had played at 5 more

school events, how many school

events would he have played at

in all?

How many more parties than baseball games did Matthew play at?

At how many different kinds of

events did Matthew play?

At how many events did Matthew

play in all?

At what type of event did Matthew play the least?

Joe played at 10 events last year

Who played in more events, Matthew or Joe?

Trang 29

Use the code to help Detective Dave discover the secret

Trang 30

3 0

2 0

2

4

1

3

subtracting f rom 10 or less

Subtract Draw petals to show the difference.

7KH¿UVWRQHKDVEHHQGRQHIRU\RX

Color the bows with an even number yellow.

Color the bows with an odd number purple.

'DWH

Trang 31

1 Solve the problems under Across

and Up

2 Find each number pair on the graph

Make a dot for each where there

lines meet.

3 Join the dots in the order

that you make them.

4 What picture did you make?

Trang 32

Trang 33

Trang 34

subtracting f rom 14 or less

odd answers.

14 − 8 =

'DWH

Trang 35

Trang 36

subtracting f rom 10 through 18

Trang 37

Subtract Fill in each missing number.

Trang 38

subtracting f rom 10 through 18

18 11

15

8 5

8

1

Subtract Fill in each missing number.

'DWH

Trang 39

20 animals were hibernating near Sleepy Pond 5 of them woke up Color 5 animals below

How many are still sleeping?

A week later, 7 more woke up Color 7 other animals

How many are still sleeping?

VXEWUDFWLQJI URPZLWKUHJURXSLQJ 'DWH

Trang 40

65 − 42

43 − 22

37 − 15

92 − 51

84

− 23

78 − 64

Trang 41

Subtract Using the difference in each rain drop, write the weather

words in order of their differences from least to greatest by the umbrella handle Then color your favorite kind of “weather drop” blue

75 − 31

88 − 46

63

− 11

96 − 25

Trang 42

Subtract Color the animals using the color code

96

− 42

97 − 12

86 − 43

99 − 14

89 − 22

95 − 63

88 − 56

78 − 11

77

− 34

98 − 55

78 − 24

Trang 43

Trang 44

Trang 45

Trang 46

99 − 27

35 − 11

57 − 33

63 − 41

74 − 32

49 − 15

65 − 22

94 − 41

68 − 44

47 − 25

66 − 24

24 − 14

57 − 23

88 − 46

98 − 24

97 − 42

74 − 63

76

− 26

54 − 10

61 − 21

82 − 62

76 − 55 29

− 16

86 − 42

48 − 22

58 − 33

'DWH

Trang 47

subtracting 3-digit numbers

982

− 650

I am a bare, rocky ball similar to Earth’s moon.

963

− 151

I am surrounded by VHYHQÀDWULQJVPDGH

Trang 48

Trang 49

Trang 50

Trang 51

Trang 52

Trang 53

Purdy the Parakeet loves to look at herself in the mirror Only one

of these parakeets below really shows what Purdy looks like in the PLUURU&DQ\RX¿QGWKHULJKWRQH"7RFKHFN\RXUDQVZHUGRWKH VXEWUDFWLRQSUREOHPVQH[WWRHDFKELUG7KHDQVZHUIRUWKHFRUUHFW bird is 24.

VXEWUDFWLQJGLJLWQXPEHUV

Trang 54

Draw a line to each matching difference to join each planet or space object to a fact about it.

Complete each pattern Then tell someone the pattern for each set of numbers.

− 236 I am a planet with days

lasting only 16 hours.

857

− 469

I am like a dirty snowball made of dust, ice and gases.

Trang 55

subtracting 3-digit numbers with zero

Trang 56

Write the numbers you see with a

sum of 5 and difference of 1.

sum of 5 and

difference of 3.

sum of 15 and

difference of 9.

adding and subtracting through 18

Make your own number glasses.

6XPRIBBBBBBBDQGGLIIHUHQFHRIBBBBBB

'DWH

Trang 57

Add or subtract.

I am smaller than your

thumb when I’m born.

I am even smaller

I am smaller than a bumblebee.

Since we are so little, we

live right next to our mothers in a safe, warm

L

40 − 17

H

55 − 16

M

31 + 29

N

27 + 36

K

88 − 19

R

74 − 28

C

96 − 48

S

44 + 46

O

62 − 48

Trang 58

Add or subtract Color each special date on the calendar.

July

1 Camp begins one week after the second Monday Color this date red

The baseball game is two weeks before the fourth Wednesday Color this date green

3 The birthday party is two weeks after the second Saturday Color this date purple

4 7KHVZLPPHHWLVWKUHHZHHNVEHIRUHWKH¿IWK7XHVGD\&RORUWKLVGDWH blue

5 The trip to the zoo is one week before the third Sunday Color this date orange

6 7KHSLFQLFLVWZRZHHNVEHIRUHWKH¿IWK7KXUVGD\&RORUWKLVGDWH yellow

7 What date is 14 days after the third Wednesday? Color this date pink

8 What date is 18 days before the fourth Friday? Color this date brown

adding and subtracting

Định dạng
Số trang	81
Dung lượng	19,85 MB