| 1) | -842 + 625 = | 2) | -588 + 810 = | 3) | -806 − 738 = |
| 4) | 30 − 960 = | 5) | -306 − 192 = | 6) | 94 − 26 = |
| 1) | -842 + 625 = -217 | 2) | -588 + 810 = 222 | 3) | -806 − 738 = -1544 |
| 4) | 30 − 960 = -930 | 5) | -306 − 192 = -498 | 6) | 94 − 26 = 68 |