| 1) | -818 + 22 = | 2) | 361 − 842 = | 3) | -306 + 351 = |
| 4) | -990 − 556 = | 5) | 151 + 109 = | 6) | 449 − 954 = |
| 1) | -818 + 22 = -796 | 2) | 361 − 842 = -481 | 3) | -306 + 351 = 45 |
| 4) | -990 − 556 = -1546 | 5) | 151 + 109 = 260 | 6) | 449 − 954 = -505 |