Math KG : Addition and subtraction : Worksheet 3

5. Fill in the missing numbers


a)

Step 1

we have to make the numbers inside the dotted box to be 10

so,

Step 2

Inside the dotted box, we have 7 and we need to find another number
Both together should make 10

to reach 10 from 7 lets see how many steps we have to move forward

so 7 + 3 = 10

Step 3

now we should check what number if we add with 3 will get 9
that is, to reach 9 from 3 lets see how many steps we have to move forward

so 3 + 6 = 9
hence 

9 + 7 = 16
6 + 10 = 16

d)

Step 1


we have to make the numbers inside one of the dotted box to be 10

Step 2

Inside the dotted box, we have 2 and we need to find another number
Both together should make 10


to reach 10 from 2 lets see how many steps we have to move forward

so 2 + 8 = 10

Step 3

now we should check what number if we add with 8 will get 9

that is, to reach 9 from 8 lets see how many steps we have to move forward

8 + 1 = 9

Step 4

now, 4 and 1 together make 5 that is 4 +1=5

hence 2 + 9 + 4 = 15
also 10 + 5 = 15