Adding and Subtracting Whole Numbers

30 and 41 make .....

• 61

• 71

• 81

What is the missing number?

9 - ..... = 6

• 3

• 2

• 4

30 and ....... make 100

100 - 30 = .....

• 70

• 60

• 80

A sweet seller has 50 sweets.

He sells 20 sweets.

How many sweets are left?

• 50 - 20 = 10 sweets

• 50 - 20 = 15 sweets

• 50 - 20 = 30 sweets

Match this addition

32 + 17

• 19 + 30

• 20 + 27

• 40 + 3

32 and 46 make 78

how to write it in mathematical operation?

• 32 + 46 = 78

• 46 - 32 = 14

Choose a number below which is between 40 and 50

• 31

• 45

• 57

One more than 36 is ....

• 1 + 36 = 37

• 1 - 36 = 35

40 + 1

match this addition

with the subtraction below

• 42 - 1 = 41

• 45 - 3 = 42

• 40 - 1 = 40

add 77 and 4

• 81

• 80

• 79