| 1) | -602 + 19 = | 2) | -648 − 488 = | 3) | -979 + 123 = |
| 4) | 345 − 699 = | 5) | 729 − 869 = | 6) | 73 + 329 = |
| 1) | -602 + 19 = -583 | 2) | -648 − 488 = -1136 | 3) | -979 + 123 = -856 |
| 4) | 345 − 699 = -354 | 5) | 729 − 869 = -140 | 6) | 73 + 329 = 402 |