| 1) | -637 − 424 = | 2) | -470 − 672 = | 3) | 448 − 206 = |
| 4) | 359 − 806 = | 5) | -798 + 622 = | 6) | -895 + 121 = |
| 1) | -637 − 424 = -1061 | 2) | -470 − 672 = -1142 | 3) | 448 − 206 = 242 |
| 4) | 359 − 806 = -447 | 5) | -798 + 622 = -176 | 6) | -895 + 121 = -774 |