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