| 13 - 8 = _____ | 11 - 9 = _____ |
| 15 - 2 = _____ | 11 - 4 = _____ |
| 16 - 14 = _____ | 11 - 3 = _____ |
| 19 - 6 = _____ | 14 - 7 = _____ |
| 10 - 3 = _____ | 19 - 16 = _____ |
| 19 - 6 = _____ | 11 - 2 = _____ |
| 11 - 9 = _____ | 18 - 7 = _____ |
| 10 - 4 = _____ | 11 - 5 = _____ |
| 17 - 6 = _____ | 17 - 0 = _____ |
| 16 - 9 = _____ | 20 - 9 = _____ |