| 1) | 670 + 29 = | 2) | -122 − 419 = | 3) | -351 + 80 = |
| 4) | 744 + 746 = | 5) | -818 − 765 = | 6) | 107 + 871 = |
| 1) | 670 + 29 = 699 | 2) | -122 − 419 = -541 | 3) | -351 + 80 = -271 |
| 4) | 744 + 746 = 1490 | 5) | -818 − 765 = -1583 | 6) | 107 + 871 = 978 |