simple addition and subtraction

Front

3 + 5 =

Back

8

Front

2 + 5 =

Back

7

Front

9 - 4 =

Back

5

Front

6 + 5 =

Back

11

Front

6 + 8 =

Back

14

Front

1 + 1 =

Back

2

Front

4 + 3 =

Back

7

Front

5 - 2 =

Back

3

Front

10 - 6 =

Back

4

Front

7 + 2 =

Back

9