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