| 序号 | 题目：1,4,6,8 | |
|---|---|---|
| 1 | (6 × 1) × (8 − 4) | |
| 2 | (6 × (8 − 4)) × 1 | |
| 3 | 8 × (6 − (4 − 1)) | |
| 4 | 6 × ((8 × 1) − 4) | |
| 5 | 8 × ((6 − 4) + 1) | |
| 6 | 6 × (8 − (4 × 1)) | |
| 7 | 6 × ((8 − 4) × 1) | |
| 8 | 8 × ((6 + 1) − 4) | |
| 9 | (6 × (8 − 4)) ÷ 1 | |
| 10 | (6 ÷ 1) × (8 − 4) | |
| 11 | 6 × ((8 ÷ 1) − 4) | |
| 12 | 6 × ((8 − 4) ÷ 1) | |
| 13 | 6 × (8 − (4 ÷ 1)) | |
| 14 | (8 − 4) ÷ (1 ÷ 6) | |
| 15 | 8 ÷ (1 − (4 ÷ 6)) | |
| 16 | 6 ÷ (1 ÷ (8 − 4)) | |