| 1) | 335 − 367 = | 2) | -156 − 77 = | 3) | 717 − 239 = |
| 4) | 40 + 234 = | 5) | -726 − 155 = | 6) | 138 + 344 = |
| 1) | 335 − 367 = -32 | 2) | -156 − 77 = -233 | 3) | 717 − 239 = 478 |
| 4) | 40 + 234 = 274 | 5) | -726 − 155 = -881 | 6) | 138 + 344 = 482 |