| 1) | -522 − 448 = | 2) | -772 − 385 = | 3) | 50 + 363 = |
| 4) | -665 + 625 = | 5) | 635 − 355 = | 6) | 160 + 904 = |
| 1) | -522 − 448 = -970 | 2) | -772 − 385 = -1157 | 3) | 50 + 363 = 413 |
| 4) | -665 + 625 = -40 | 5) | 635 − 355 = 280 | 6) | 160 + 904 = 1064 |