| 1) | 504 − 438 = | 2) | -434 + 511 = | 3) | 905 − 16 = |
| 4) | -592 − 694 = | 5) | 455 − 629 = | 6) | 741 + 950 = |
| 1) | 504 − 438 = 66 | 2) | -434 + 511 = 77 | 3) | 905 − 16 = 889 |
| 4) | -592 − 694 = -1286 | 5) | 455 − 629 = -174 | 6) | 741 + 950 = 1691 |