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