6 − 0 = 19 − 10 = 9 − 5 = 13 − 7 =
13 + 4 = 13 − 10 = 2 + 10 = 8 + 1 =
5 − 4 = 5 + 15 = 9 + 8 = 11 + 5 =
16 − 13 = 11 − 10 = 1 + 9 = 10 + 9 =
3 + 10 = 8 + 5 = 5 + 9 = 2 + 13 =
7 + 13 = 9 − 1 = 18 − 2 = 16 − 2 =
8 − 2 = 1 − 1 = 10 − 2 = 14 − 3 =
2 + 8 = 8 − 4 = 19 + 1 = 20 − 4 =
19 − 6 = 2 + 11 = 10 − 6 = 20 − 12 =
12 + 8 = 11 − 11 = 11 + 8 = 6 + 1 =
4 + 5 = 14 − 10 = 9 + 5 = 2 + 9 =
3 + 13 = 11 + 9 = 10 + 5 = 16 − 16 =
3 + 14 = 7 + 7 = 1 + 2 = 11 − 6 =
14 − 7 = 19 − 13 = 13 − 8 = 3 + 3 =
1 + 14 = 17 − 8 = 15 − 13 = 17 − 11 =
11 + 7 = 6 + 11 = 18 − 15 = 14 − 11 =
14 − 5 = 18 + 1 = 13 − 5 = 2 + 6 =
9 − 7 = 4 + 16 = 3 + 6 = 3 + 8 =
10 + 8 = 3 + 5 = 5 + 11 = 5 + 8 =
13 + 3 = 5 + 14 = 5 + 2 = 15 − 9 =
6 + 9 = 11 − 7 = 9 + 7 = 2 + 3 =
9 − 3 = 16 − 3 = 7 − 3 = 20 − 16 =
9 + 2 = 4 + 11 = 10 + 3 = 7 + 4 =
18 − 10 = 14 − 8 = 18 − 14 = 10 − 4 =
11 − 1 = 16 − 15 = 19 − 1 = 6 − 4 =