Matho

Front 1

1 + 0 =

Back 1

1

Front 2

1 + 1 =

Back 2

2

Front 3

2 + 1 =

Back 3

3

Front 4

2 + 2 =

Back 4

4

Front 5

2 + 3 =

Back 5

5

Front 6

4 + 2 =

Back 6

6

Front 7

3 + 4 =

Back 7

7

Front 8

3 + 5 =

Back 8

8

Front 9

5 + 4 =

Back 9

9

Front 10

4 + 6 =

Back 10

10

Front 11

9 + 2 =

Back 11

11

Front 12

10 + 2 =

Back 12

12

Front 13

4 + 9 =

Back 13

13

Front 14

11 + 3 =

Back 14

14

Front 15

8 + 7 =

Back 15

15