Addition and Subtraction

3 + ___ = 7

9 - 4 = ___

9 - 5 = ___

7 - ___ = 4

• 1

• 2

• 5

• 6

• 6

• 5

• 4

• 3

There were 15 birds in the tree. Some birds flew away and there were 6 birds left. How many birds flew away? 

• 9

• 13

• 21

• 10

• 1

• 8

• 9

• 10

5 - 2 =

• 3

• 5

• 2

• 4

Choose the correct sum.

• 8

• 4

• 0

• 1