| 1) | -631 + 592 = | 2) | 942 + 670 = | 3) | -933 + 358 = |
| 4) | -667 + 733 = | 5) | 809 + 95 = | 6) | 187 − 768 = |
| 1) | -631 + 592 = -39 | 2) | 942 + 670 = 1612 | 3) | -933 + 358 = -575 |
| 4) | -667 + 733 = 66 | 5) | 809 + 95 = 904 | 6) | 187 − 768 = -581 |