| 1) | 902 − 486 = | 2) | -931 + 575 = | 3) | -345 − 619 = |
| 4) | 211 + 374 = | 5) | -73 + 839 = | 6) | 376 + 451 = |
| 1) | 902 − 486 = 416 | 2) | -931 + 575 = -356 | 3) | -345 − 619 = -964 |
| 4) | 211 + 374 = 585 | 5) | -73 + 839 = 766 | 6) | 376 + 451 = 827 |