| 1) | -425 + 627 = | 2) | 560 − 24 = | 3) | -405 − 639 = |
| 4) | -226 + 23 = | 5) | 206 + 319 = | 6) | 74 − 152 = |
| 1) | -425 + 627 = 202 | 2) | 560 − 24 = 536 | 3) | -405 − 639 = -1044 |
| 4) | -226 + 23 = -203 | 5) | 206 + 319 = 525 | 6) | 74 − 152 = -78 |