| 1) | -359 − 390 = | 2) | 331 + 306 = | 3) | -551 − 57 = |
| 4) | 683 + 314 = | 5) | -97 − 146 = | 6) | -150 + 109 = |
| 1) | -359 − 390 = -749 | 2) | 331 + 306 = 637 | 3) | -551 − 57 = -608 |
| 4) | 683 + 314 = 997 | 5) | -97 − 146 = -243 | 6) | -150 + 109 = -41 |