Missing Addends

Front

4 + ___ = 10

Back

6

Front

6 + ____ = 12

Back

6

Front

10 - ___ = 7

Back

3

Front

15 - ___ = 10

Back

5

Front

8 + ___ = 12

Back

4

Front

____ + 3 = 9

Back

6

Front

___ + 8 = 15

Back

7

Front

7 + ____ = 13

Back

6

Front

12 - ____ = 9

Back

3

Front

16 - ___ = 12

Back

4