| 1) | 867 − 57 = | 2) | -969 + 191 = | 3) | -300 − 552 = |
| 4) | -559 − 307 = | 5) | -399 + 242 = | 6) | 264 + 959 = |
| 1) | 867 − 57 = 810 | 2) | -969 + 191 = -778 | 3) | -300 − 552 = -852 |
| 4) | -559 − 307 = -866 | 5) | -399 + 242 = -157 | 6) | 264 + 959 = 1223 |