| 1) | 914 − 394 = | 2) | 760 + 826 = | 3) | -628 + 293 = |
| 4) | 423 − 554 = | 5) | -421 − 505 = | 6) | -610 + 953 = |
| 1) | 914 − 394 = 520 | 2) | 760 + 826 = 1586 | 3) | -628 + 293 = -335 |
| 4) | 423 − 554 = -131 | 5) | -421 − 505 = -926 | 6) | -610 + 953 = 343 |