| 序号 | 题目：1,5,8,8 | |
|---|---|---|
| 1 | (8 × 1) × (8 − 5) | |
| 2 | (8 × (8 − 5)) × 1 | |
| 3 | (8 × (5 − 1)) − 8 | |
| 4 | 8 × ((8 − 5) × 1) | |
| 5 | 8 × ((8 × 1) − 5) | |
| 6 | 8 × (8 − (5 × 1)) | |
| 7 | (8 × (8 − 5)) ÷ 1 | |
| 8 | (8 ÷ 1) × (8 − 5) | |
| 9 | 8 × (8 − (5 ÷ 1)) | |
| 10 | 8 × ((8 ÷ 1) − 5) | |
| 11 | 8 × ((8 − 5) ÷ 1) | |
| 12 | (8 − 5) ÷ (1 ÷ 8) | |
| 13 | 8 ÷ (1 ÷ (8 − 5)) | |