2 + 4 = 6                 1 + 6 = 7                 2 + 5 = 7

 

21 + 1 = 22             5 + 4 = 9                 2 + 4 = 6

 

11 + 2 = 13             7 + 6 = 13               4 + 4 = 8

 

22 + 1 = 23             2 + 6 = 8                 8 + 4 = 12

 

23 + 2 = 25             9 + 6 = 15               3 + 4 = 7

 

33 + 1 = 34             8 + 7 = 15               5 + 4 = 9

 

9 + 1 = 10               1 + 6 = 7                 3 + 3 = 6

 

3 + 2 = 5                 5 + 5 = 10               2 + 7 = 9

 

38 + 1 = 39             5 + 2 = 7                 6 + 2 = 8

 

17 + 1 = 18             4 + 0 = 4                 7 + 7 = 14