| 1) | 504 − 662 = | 2) | 826 − 331 = | 3) | 488 − 225 = |
| 4) | -978 + 241 = | 5) | 720 − 982 = | 6) | -801 − 634 = |
| 1) | 504 − 662 = -158 | 2) | 826 − 331 = 495 | 3) | 488 − 225 = 263 |
| 4) | -978 + 241 = -737 | 5) | 720 − 982 = -262 | 6) | -801 − 634 = -1435 |