| 1) | -664 − 564 = | 2) | 389 + 85 = | 3) | 25 + 595 = |
| 4) | -505 − 373 = | 5) | -372 − 537 = | 6) | -85 − 962 = |
| 1) | -664 − 564 = -1228 | 2) | 389 + 85 = 474 | 3) | 25 + 595 = 620 |
| 4) | -505 − 373 = -878 | 5) | -372 − 537 = -909 | 6) | -85 − 962 = -1047 |