| 1) | -168 + 786 = | 2) | 81 + 337 = | 3) | 858 − 684 = |
| 4) | -906 − 547 = | 5) | 445 + 245 = | 6) | -18 + 818 = |
| 1) | -168 + 786 = 618 | 2) | 81 + 337 = 418 | 3) | 858 − 684 = 174 |
| 4) | -906 − 547 = -1453 | 5) | 445 + 245 = 690 | 6) | -18 + 818 = 800 |