| 15 - 15 = _____ | 8 - 4 = _____ |
| 7 - 3 = _____ | 3 - 3 = _____ |
| 8 + 1 = _____ | 1 + 13 = _____ |
| 12 + 3 = _____ | 2 + 4 = _____ |
| 13 + 3 = _____ | 9 - 0 = _____ |
| 17 - 4 = _____ | 6 + 14 = _____ |
| 13 - 10 = _____ | 8 + 12 = _____ |
| 8 + 11 = _____ | 10 - 6 = _____ |
| 15 + 4 = _____ | 12 + 4 = _____ |
| 16 + 0 = _____ | 6 + 1 = _____ |