0 + 0 = 0 5 + 5 = 10 4 + 4 = 8

12 + 1 = 13 6 + 3 = 9 8 + 1 = 9

20 + 1 = 21 7 + 3 = 10 8 + 1 = 9

20 + 9 = 29 3 + 6 = 9 9 + 9 = 18

8 + 10= 18 8 + 4 = 12 7 + 1 = 8

2 + 3 = 5 3 + 3 = 6 7 + 5 = 12

22 + 1 = 23 2 + 7 = 9 9 + 3 = 12

10 + 9 = 19 6+ 6 = 12 3 + 7 = 10

3 + 10 = 13 4 + 2 = 6 9 + 2 = 11

9 + 9 = 18 8 + 8 = 16 6 + 6 = 12