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