| 1) | -106 − 661 = | 2) | -577 − 208 = | 3) | -589 − 37 = |
| 4) | -742 + 741 = | 5) | -891 − 858 = | 6) | 362 + 12 = |
| 1) | -106 − 661 = -767 | 2) | -577 − 208 = -785 | 3) | -589 − 37 = -626 |
| 4) | -742 + 741 = -1 | 5) | -891 − 858 = -1749 | 6) | 362 + 12 = 374 |