| 1) | -497 − 514 = | 2) | -439 + 216 = | 3) | 582 − 327 = |
| 4) | -16 + 609 = | 5) | 900 + 101 = | 6) | 786 + 299 = |
| 1) | -497 − 514 = -1011 | 2) | -439 + 216 = -223 | 3) | 582 − 327 = 255 |
| 4) | -16 + 609 = 593 | 5) | 900 + 101 = 1001 | 6) | 786 + 299 = 1085 |