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