Вычислите
| № | I | II | III | IV | V |
| 1 | 1- | 2 | 1- | 8 |
|
| 2 | 1+ | 2: | 2- |
|
|
| 3 | 1: | 2+ | 10-3 | 1: |
|
| 4 |
| 2- | -2+ | 1- |
|
| 5 |
| -2- | -2- | 1+ | - |
| 6 |
| -5 | -2 | -5+4 | 5-2 |
| 7 | 3 | -5: | -2: | -5-4 | 5-6 |
| 8 |
| 5- | -3 | 5 | -5-6 |
| 9 | -4+2 | 5-2 | -3 | -5: | -5 |
| 10 | -4-2 | -5-2 | 3 | -1 | -5:1 |
| 11 | 5:2 | -5+2 | 3 | -1 | -4 |
| 12 | 2 | - | - | -1 | -4: |
| 13 | 1: | -14 | 1 | -4+ | |
| 14 | -7 | - | -14- | (-10) | -4- |
| 15 | -7: | -2 | -14+ | - | 5 |
| 16 | 3- | -2 | 2 |
| (-6) |
| 17 | 3+ | 2 |
| :6 | |
| 18 |
| 3 | 1- | 1:3 | |
| 19 | - | 5-7 | 1: | 3 | -4 |
| 20 | 5 | -2 | 1 | 3 | -4 |
2
