| 1) | 6 − 4 = | 2) | 7 + 4 = | 3) | -5 + 7 = | 4) | -1 − 3 = |
| 5) | 6 + 4 = | 6) | -4 − 9 = | 7) | -1 − 4 = | 8) | -2 − 9 = |
| 1) | 6 − 4 = 2 | 2) | 7 + 4 = 11 | 3) | -5 + 7 = 2 | 4) | -1 − 3 = -4 |
| 5) | 6 + 4 = 10 | 6) | -4 − 9 = -13 | 7) | -1 − 4 = -5 | 8) | -2 − 9 = -11 |