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