| 1) | -822 + 30 = | 2) | -30 + 202 = | 3) | -178 − 637 = |
| 4) | 870 − 419 = | 5) | -855 + 818 = | 6) | -118 − 1 = |
| 1) | -822 + 30 = -792 | 2) | -30 + 202 = 172 | 3) | -178 − 637 = -815 |
| 4) | 870 − 419 = 451 | 5) | -855 + 818 = -37 | 6) | -118 − 1 = -119 |