Adding One

Front 1

1 + 1 =

Back 1

2

Front 2

2 + 1 =

Back 2

3

Front 3

3 + 1 =

Back 3

4

Front 4

4 + 1 =

Back 4

5

Front 5

5 + 1 =

Back 5

6

Front 6

6 + 1 =

Back 6

7

Front 7

7 + 1 =

Back 7

8

Front 8

8 + 1 =

Back 8

9

Front 9

9 + 1 =

Back 9

10

Front 10

1 + 2 =

Back 10

3

Front 11

1 + 3 =

Back 11

4

Front 12

1 + 4 =

Back 12

5

Front 13

1 + 5 =

Back 13

6

Front 14

1 + 6 =

Back 14

7

Front 15

1 + 7 =

Back 15

8

Front 16

1 + 8 =

Back 16

9

Front 17

1 + 9 =

Back 17

10