| 序号 | 题目：1,1,4,8 | |
|---|---|---|
| 1 | ((8 − 1) − 1) × 4 | |
| 2 | (8 × (4 − 1)) × 1 | |
| 3 | (8 − (1 + 1)) × 4 | |
| 4 | (8 × 1) × (4 − 1) | |
| 5 | (8 + 4) × (1 + 1) | |
| 6 | 8 × (4 − (1 × 1)) | |
| 7 | 8 × ((4 − 1) × 1) | |
| 8 | 8 × ((4 × 1) − 1) | |
| 9 | (8 × (4 − 1)) ÷ 1 | |
| 10 | (8 ÷ 1) × (4 − 1) | |
| 11 | 8 × ((4 ÷ 1) − 1) | |
| 12 | 8 × ((4 − 1) ÷ 1) | |
| 13 | 8 × (4 − (1 ÷ 1)) | |
| 14 | (4 − 1) ÷ (1 ÷ 8) | |
| 15 | 8 ÷ (1 ÷ (4 − 1)) | |