| 7 − 3 = | 16 − 15 = | 7 + 8 = | 15 + 1 = | ||||
| 2 + 5 = | 18 − 2 = | 19 − 15 = | 17 − 9 = | ||||
| 5 − 0 = | 15 − 1 = | 17 − 11 = | 14 + 4 = | ||||
| 0 + 20 = | 16 − 14 = | 7 + 4 = | 1 + 14 = | ||||
| 2 + 16 = | 3 + 7 = | 2 + 15 = | 5 + 9 = | ||||
| 6 − 2 = | 3 + 4 = | 2 + 11 = | 7 − 4 = | ||||
| 20 − 14 = | 2 − 1 = | 19 − 10 = | 10 − 8 = | ||||
| 3 + 10 = | 11 − 3 = | 8 + 3 = | 1 + 11 = | ||||
| 20 − 9 = | 11 + 4 = | 20 − 1 = | 12 + 5 = | ||||
| 20 − 10 = | 11 + 9 = | 8 − 1 = | 8 + 7 = | ||||
| 19 − 8 = | 6 + 5 = | 4 + 4 = | 12 − 9 = | ||||
| 5 + 8 = | 3 − 3 = | 15 − 14 = | 11 − 11 = | ||||
| 6 + 2 = | 6 + 14 = | 4 − 1 = | 7 − 2 = | ||||
| 4 − 3 = | 2 + 8 = | 19 − 7 = | 8 + 6 = | ||||
| 17 − 14 = | 2 + 13 = | 16 − 1 = | 20 − 4 = | ||||
| 10 − 5 = | 18 − 17 = | 4 + 15 = | 13 − 10 = | ||||
| 19 − 13 = | 13 − 8 = | 15 − 5 = | 19 − 17 = | ||||
| 3 + 11 = | 11 − 10 = | 6 + 13 = | 3 + 9 = | ||||
| 11 − 6 = | 4 + 13 = | 16 − 6 = | 10 + 2 = | ||||
| 19 − 11 = | 8 + 5 = | 7 + 10 = | 19 − 18 = | ||||
| 10 − 3 = | 17 − 4 = | 15 − 7 = | 14 + 3 = | ||||
| 20 − 8 = | 6 + 8 = | 13 + 5 = | 11 + 7 = | ||||
| 9 − 8 = | 17 + 1 = | 18 − 15 = | 4 + 16 = | ||||
| 2 + 1 = | 2 + 6 = | 5 + 12 = | 3 + 6 = | ||||
| 9 − 5 = | 7 + 9 = | 3 + 2 = | 8 + 11 = | ||||
| 51 − | 49 + | getallen t/m 20 | |||||||