T S R A AR M S OL H C S

GRADE 2

T I A C A M L E H T T A R I O E A P N O S l e l i d f M A n c tivitie Fu s

7-8 yrs

G RA DE 2

M A E T H I C T AL A M PERATIONS O

Fun-filled Activities

Addition Addition is putting numbers together. The numbers that we add are called addends.

8

The result of addition is called the sum.

7 = 15

Addends

Sum

IT IS TRUE ! The

Find the sum of the following. a. 9 + 8

=

k.

5+5

=

b. 7 + 5

=

l.

6+7

=

c. 8 + 9 + 3 =

m. 5 + 4 + 1 =

d. 5 + 8 + 7 =

n. 8 + 1 + 1 =

e. 7 + 9

=

o. 4 + 8 + 3 =

f.

=

p. 5 + 4

8+4

+

sum is always greater than th e being a dded, e numbers xc one of the num ept when added bers being is zero.

=

g. 9 + 5 + 6 =

q. 2 + 9 + 1 =

h. 4 + 3 + 5 =

r.

3+6+2 =

i.

5+3+6 =

s.

6+7+3 =

j.

2+5+9 =

t.

9+1+7 =

Challenge

Write addition sums of any 3 numbers such that they add up to 18. How many such sums did you find?

GRADE 2: MATHEMATICAL OPERATIONS

2

Adding Tens and Ones

es

s

3 8 +4 1 9

On

Ten

On

Ten

es

2. Add the tens s

1. Add the ones

3 8 +4 1 7 9

IT IS TRU E! Any

numb er +1 = next numb er

Add the ones. Then add the tens. a.

b.

c.

d.

T O 2 2 +3 7

f.

T O 4 1 +2 5

g.

h.

T 2 +4 +3

j.

T 6 +2 +1

k.

T O 2 5 + 4

e.

i.

O 2 3 2

T O 7 1 +1 8

T O 3 7 +2 2

T O 5 3 +2 4

T 4 +2 +1

O 2 2 4

O 2 3 3

T O 4 3 + 2

T O 4 1 +2 2

l.

T 3 +2 +2

O 4 2 2

Challenge

In the addition statement below, replace the numbers at ones and tens place with another numbers such that the sum is 75. 31 + 24 3

GRADE 2: MATHEMATICAL OPERATIONS

Add the tens and ones.

3

Regroup the ones.

es

2.

On

Write the numbers in expanded form.

Ten

1.

s

Adding Tens and Ones with Regrouping

2 tens and 8 ones

2 8 +4 6

4 tens and 6 ones 6 tens and 14 ones

6 tens and 10 ones + 4 ones 4.

10 ones = 1 ten, so carry over 1 ten to 6 tens and add = 7 tens and 4 ones = 74.

1

2 8 +4 6 7 4

Write the numbers in expanded form. Then add by regrouping. a.

b.

T O 2 7 +5 5

27= 2 tens and 7 ones 55=

T O 6 4 +3 8

b.

T O 7 2 +4 9

b.

T O 1 9 +2 3

GRADE 2: MATHEMATICAL OPERATIONS

4

Speedy Sums Add across and down in just 4 minutes! Then write your answers in the grid. Across 1) 14+4

3) 53+3

5) 15+3

8) 71+5

10) 42+7

12) 63+4

14) 12+4

16) 32+7

17) 30+5

19) 81+3

23) 31+6

25) 22+2

27) 23+2

29) 54+5

30) 11+6

1. 7. 14.

2. 8.

15. 19.

22.

3. 9.

4. 10.

16. 20. 23.

5. 11. 17.

6. 12.

13.

27.

28.

18.

21. 24.

25.

29.

26. 30.

Down 2) 83+4

4) 62+2

6) 81+5

7) 30+1

9) 61+2

11) 90+3

13) 71+1

15) 62+2

18) 56+3

20) 42+1

21) 90+2

22) 63+2

24) 72+3

26) 40+1

28) 55+2

How many could you attempt? 5

GRADE 2: MATHEMATICAL OPERATIONS

Adding Tens and Ones with Regrouping Short form to regroup and add 1. Add the ones. Tens Ones 3 8 +4 8

2. Add the tens.

Tens Ones 1 3 8 +4 8 8 6

Hence, 38 + 48 = 86

Add. Regroup as needed.

T O 3 7 +4 7

c.

T O 3 8 +3 7

g.

T O 2 3 +3 8

k.

T O 7 2 +2 9

b.

T O 3 6 +4 4

f.

T O 5 2 +2 9

j.

a.

e.

i.

T O 2 6 +3 9

T O 1 4 +4 8

d.

T O 4 6 +5 9

h.

T O 4 9 +5 5

l.

T O 6 6 +6 7

T O 3 7 +9 3

Challenge

If you have 18 bananas and your mother gave two dozens more. How many bananas do you have in all now?

GRADE 2: MATHEMATICAL OPERATIONS

6

Adding Hundreds, Tens and Ones

6 2 8

On es

Hu nd re ds Te ns

1 + 3

2 2 4

6 2 8

1 + 3 4

Find the sum and decode the name of a cartoon. a.

5 3 2 +1 0 6

e.

8 4 8 +1 0 1

b.

4 2 4 +1 6 1

f.

2 3 3 +2 3 3

c.

3 5 9 +2 2 0

g.

1 5 2 +3 4 6

d.

7 1 4 +2 1 3

2 2 4

On es

2 2

3. Add the hundreds. Hu nd re ds Te ns

1 + 3

2. Add the tens. On es

Hu nd re ds Te ns

1. Add the ones.

6 2 8

IT IS TRU E A chan ge i !

n the or d e r o adden ds doe f s chang e the s not u 112 + 214 = m. 2 1 4+ 112 = 326

The key!

h.

6 3 1 +2 5 3

638= E 585=C 579=Y 927=H

i.

2 0 6 +5 2 3 +1 6 0

j.

2 1 3 +4 7 0 +3 0 5

k.

7 1 4 +1 3 1 1 2 3

l.

3 5 6 + 3 3 1 0 0

949=K 466=U 498=M 884=S 889=O 988=E

Challenge

The name of the cartoon is

7

GRADE 2: MATHEMATICAL OPERATIONS

Adding Hundreds, Tens and Ones with Regrouping 1. Add the ones and regroup. 9 + 4 = 13 ones = 1 ten + 3 ones Write 3 at the ones place and

H

T

O

4 + 2

2 8

9 4 3

H

T

O

4 + 2

2 8 1

9 4 3

H

T

O

4 + 2 7

2 8 1

9 4 3

1

carry over 1 ten to the tens column. 2. Add the tens.

1

1 + 2 + 8 = 11 tens = 1 hundred and 1 ten Write 1 at the tens place and carry over 1 hundred to the hundreds column. 3. Add the hundreds.

1

1 + 4 + 2 = 7 hundreds The sum of 429 and 284 is 713. Add. Regroup as needed b. a. 1 7 3 7 + 6 + 4 8 9

3 6

1

1

IT IS TRUE!

5 9

Always arrange the numbers according to their place value.

H T O H T O 2 9 8 2 9 8  + 4 5 +4 5

c.

4 + 3

2 2

3 9

d.

9 + 4

0 9

5 6

e.

2 + 4

3 4

5 6

f.

7 + 8

4 4

3 4

g.

3 + 4

2 8

2 9

h.

1 + 2

4 2

8 7

i.

5 9

2 9

j.

6 8

8 3

k.

4 8

2 6

l.

2 9

7 9

5 + 2

6 + 2

GRADE 2: MATHEMATICAL OPERATIONS

6 + 3

8

7 + 4

Mystery Addition Find the answer to each of the addition problems in the top square. Write your answer in the middle square. Write the letter that matches the answer in the bottom square. 598 305 317 425 567 220 145 261 932 845 763 920 100 E

B

W

A

R

Z

K

F

V

O

Y

D

J

503 759 541 687 342 848 200 790 194 270 368 424 642 Q

N

a. 1 4 2

X b. 4 2 3

I

U

L

S

C

G

e. 4 6 3

+2 4 6 +4 0 6

+3 0 0

i. 4 9 8

j. 5 2 0

k. 2 7 9

l. 1 1 4

m. 2 3 1

n. 6 0 2

+1 8 9

+2 7 0

+1 4 5

+2 5 4

+1 9 4

+1 8 8

9

f. 1 6 2

M

d. 1 6 1

+2 2 6 +1 7 5

c. 3 2 1

P

T

H

g. 1 4 4

h. 2 2 5

+ 3 2 +4 9 8

+3 4 2

GRADE 2: MATHEMATICAL OPERATIONS

Addition: Word Problems Key words that are helpful in identification of addition problems: Total, Sum, Added to, Combined, Altogether

Read and solve the word problems.

Solve

1. John has 12 vanilla ice creams and 13 strawberry ice creams. How many ice creams does he have in all?

12 + 13 25 ice creams

2. Basket A contains 58 apples and Basket B contains 42 oranges. How many fruits are there in both the baskets ?

fruits

3. In a train, there are 640 men and 310 women. How many passengers are there in all? passengers 4. There are 356 marbles in a box and 274 in another. How many marbles are there in all? marbles

GRADE 2: MATHEMATICAL OPERATIONS

10

Subtraction Subtraction is taking away one number from the other. The answer of a subtraction problem is called difference.

12

–

minuend Write true and false.

7

=5

subtrahend difference

IT IS TRUE ! The d

i betwee fference n and zer any number o is the numbe r itself

19 – 8 = 1

5–0=0

11 – 5 = 6

10 – 2 = 8

16 – 4 = 11

14 – 4 = 10

9–3

17 – 9 = 6

=6

15 – 4 = 10

18 – 9 = 9

13 – 6 = 5

11 – 5 = 6

14 – 8 = 6

17 – 7 = 10

Challenge

Write subtraction problems of any 2 numbers such that the difference is 24. How many such problems did you find? 11

GRADE 2: MATHEMATICAL OPERATIONS

Fact Family: Addition and Subtraction are Related! A fact family uses the same numbers in addition and subtraction problems.

a.

4 +7

9 +7

i.

b.

7 +4

c.

d.

11 – 4

j.

k.

+9 16

–

e.

11 – 7

16 – 7

m.

6

+

6 +8

9 +6

15 – 6

r.

s.

15

10 – 7 3

g. 14

h. 14

–

– 6

5

5 +7 n.

12 – 7

o.

t.

– 9 6

Challenge

Solve this. Which one number will you put in the blanks to get 15 again? 15- 4 + 2- ____+ 4- 2 + ____= 15

GRADE 2: MATHEMATICAL OPERATIONS

12

10 – 3 7

8

+ 12

9 q.

f.

8

+ 14

l.

16

3 +7 10

7 +3 10

p. 12

– 5

Subtracting Tens and Ones 2. Subtract the tens. Ten

Ten s On es

s On es

1. Subtract the ones.

7 6 – 3 4 4 2

7 6 – 3 4 2

Subtract the ones and then the tens. a.

4 – 3

7 2

b.

9 – 8

6 2

c.

6 – 2

2 1

d.

5 – 3

1 1

e.

6 – 4

8 3

f.

6 – 5

9 0

g.

5 – 3

7 6

h.

6 – 2

6 4

i.

8 – 2

5 4

j.

6 – 1

3 3

k.

4 2

l.

7 – 1

2 2

9 – 1

IT IS TRU E! Any n

um the nu ber – 0 = mber itself Like 8 – 0=8

Challenge

Subtract 42 from 54.

Which is the correct form? Why?

4 – 5

13

2 4

5 – 4

4 2

GRADE 2: MATHEMATICAL OPERATIONS

Subtracting Hundreds, Tens and Ones

7 – 5

3 2

7 – 5

6 5 1

3 2 1

7 – 5 2

6 5 1

Which word would you use to describe a crane? Find out by subtracting the ones, tens and hundreds. Then use the letters to spell out the same. a.

S

8 2 3 – 1 2 1

d.

I

4 2 4 – 2 1 3

g.

G

8 0 8 – 6 0 5

b.

S

c.

9 4 6 – 4 2 3

e.

F

7 3 8 – 5 1 4

f.

T

9 1 3 – 4 0 2

es

6 5 1

IT IS TRUE ! Always s t

subtracti art ng from the ones c Even if y olumn. ou are n ot regroup ing

H 6 6 4 – 4 2 2

3 6 9 – 1 3 5

h.

L

3 2 1

On

es

Hu nd re ds Te ns

3. Subtract the hundreds.

On

es

Hu nd re ds Te ns

2. Subtract the tens.

On

Hu nd re ds Te ns

1. Subtract the ones.

i.

j.

L 7 5 8 – 5 2 3

E 6 4 9 – 2 2 8

I am Challenge

What is the difference between the largest 2-digit number and the smallest 3-digit even number?

GRADE 2: MATHEMATICAL OPERATIONS

14

Subtracting Tens and Ones with Regrouping T

O

8 – 6

3 8

T

O

1

13

7 – 6

3 8 5

T

O

7

13

8 – 6 1

3 8 5

1. Subtract the ones first. 3 – 8 can’t be done. You need to regroup.

IT IS TRUE! We cannot change the order of numbers and subtract. 63 – 34 (≠) 34 – 63

2. Borrow 1 ten from the tens. 8 – 1= 7 in the tens column. 10 + 3 = 13 in the ones column.

3. Now subtract. Ones first 13 – 8 = 5 Then the tens 7 – 0 = 7.

Fill in the blanks and complete the steps. T

O

6 – 3

3 4

1. Subtract the first. 3 – 4 can’t be done. You need to regroup.

T

O

2. Borrow

5

13

6 – 3

3 4 9

T

O

7

13

6 – 3 2

3 4 9

ten from the .

– 1 = 5 in the tens column. 10 + = 13 in the ones column. 3. Now subtract. Ones first –4= Then the tens – = 2.

15

GRADE 2: MATHEMATICAL OPERATIONS

The Smart Scholars Series is a collection of fun, activity-based workbooks that encourage your child to learn through many interesting activities. The 10 books in Grade 2 cover exercises that range from punctuation, parts of speech to mathematical operations, equations, measurement, and symmetry. It also covers skills to sharpen reading comprehension. These concepts are presented with lucid, visual examples, giving the child ample scope to practice. With more than 30 colourful pages of amazing activities, this series is a complete package that will turn your child’s learning hours fly by! First Published in 2017 by

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