| 1) | 4 + 2 = | 2) | -9 − 3 = | 3) | -3 + 9 = | 4) | 4 − 8 = |
| 5) | 2 + 6 = | 6) | 4 − 4 = | 7) | 9 − 4 = | 8) | -1 + 2 = |
| 1) | 4 + 2 = 6 | 2) | -9 − 3 = -12 | 3) | -3 + 9 = 6 | 4) | 4 − 8 = -4 |
| 5) | 2 + 6 = 8 | 6) | 4 − 4 = 0 | 7) | 9 − 4 = 5 | 8) | -1 + 2 = 1 |