| 13 - 9 = _____ | 20 - 8 = _____ |
| 12 - 12 = _____ | 20 - 11 = _____ |
| 15 - 10 = _____ | 15 - 10 = _____ |
| 11 - 9 = _____ | 15 - 1 = _____ |
| 16 - 14 = _____ | 16 - 5 = _____ |
| 15 - 11 = _____ | 13 - 9 = _____ |
| 14 - 7 = _____ | 17 - 8 = _____ |
| 16 - 16 = _____ | 16 - 2 = _____ |
| 17 - 5 = _____ | 13 - 7 = _____ |
| 14 - 14 = _____ | 14 - 14 = _____ |