| 1) | -657 − 395 = | 2) | 337 + 556 = | 3) | -379 + 142 = |
| 4) | -778 − 369 = | 5) | 743 + 305 = | 6) | 384 + 774 = |
| 1) | -657 − 395 = -1052 | 2) | 337 + 556 = 893 | 3) | -379 + 142 = -237 |
| 4) | -778 − 369 = -1147 | 5) | 743 + 305 = 1048 | 6) | 384 + 774 = 1158 |