1 + 1 = 2 1 + 2 = 31 + 3 = 4 1 + 4 = 51 + 5 = 6 1 + 6 = 71 + 7 = 8 1 + 8 = 91 + 9 = 10 3 + 7 = 1

02 + 1 = 3 2 + 2 = 42 + 3 = 5 2 + 4 = 62 + 5 = 7 2 + 6 = 82 + 7 = 9 2 + 8 = 1

0

3 + 1 = 4 3 + 2 = 53 + 3 = 6 3 + 4 = 73 + 5 = 8 3 + 6 = 94 + 1 = 5 4 + 2 = 64 + 3 = 7 4 + 4 = 84 + 5 = 9 4 + 6 = 1

05 + 1 = 6 5 + 2 = 75 + 3 = 8 5 + 4 = 95 + 5 = 10 5 + 6 = 1

1

6 + 1 = 7 6 + 2 = 86 + 3 = 9 6 + 4 = 1

07 + 1 = 8 7 + 2 = 97 + 3 = 10 7 + 4 = 1

18 + 1 = 9 8 + 2 = 1

010 – 0 = 10 10 – 1 = 910 – 2 = 8 10 – 3 = 710 – 4 = 6 10 – 5 = 510 – 6 = 4 10 – 7 = 3

10 – 8 = 2 10 – 9 = 110 – 10 =

0

9 – 0 = 9 9 – 1 = 89 – 2 = 7 9 – 3 = 69 – 4 = 5 9 – 5 = 49 – 6 = 3 9 – 7 = 29 – 8 = 1 9 – 9 = 08 – 0 = 8 8 – 1 = 78 – 2 = 6 8 – 3 = 58 – 4 = 4 8 – 5 = 3

8 – 6 = 2 8 – 7 = 18 – 8 = 07 – 0 = 7 7 – 1 = 67 – 2 = 5 7 – 3 = 47 – 4 = 3 7 – 5 = 27 – 6 = 1 7 – 7 = 06 – 0 = 6 6 – 1 = 56 – 2 = 4 6 – 3 = 36 – 4 = 2 6 – 5 = 16 – 6 = 05 – 0 = 5 5 – 1 = 4

5 – 2 = 3 5 – 3 = 25 – 4 = 1 5 – 5 = 04 – 0 = 4 4 – 1 = 34 – 2 = 2 4 – 3= 14 – 4 = 03 – 0 = 3 3 – 1 = 23 – 2 = 1 3 – 3 = 02 – 0 = 2 2 – 1 = 12 – 2 = 01 – 0 = 1 1 – 1 = 0