| 1) | 309 + 860 = | 2) | -907 + 623 = | 3) | -102 − 134 = |
| 4) | -214 + 15 = | 5) | 480 − 175 = | 6) | 832 + 7 = |
| 1) | 309 + 860 = 1169 | 2) | -907 + 623 = -284 | 3) | -102 − 134 = -236 |
| 4) | -214 + 15 = -199 | 5) | 480 − 175 = 305 | 6) | 832 + 7 = 839 |