| 序号 | 题目：4,4,6,12 | |
|---|---|---|
| 1 | (12 × 4) − (6 × 4) | |
| 2 | 12 × ((4 + 4) − 6) | |
| 3 | 12 × (4 − (6 − 4)) | |
| 4 | 6 × (12 − (4 + 4)) | |
| 5 | 6 × ((4 × 4) − 12) | |
| 6 | 6 × ((12 − 4) − 4) | |
| 7 | ((12 + 4) × 6) ÷ 4 | |
| 8 | (12 × 4) ÷ (6 − 4) | |
| 9 | (12 ÷ (6 − 4)) × 4 | |
| 10 | (4 + (12 ÷ 6)) × 4 | |
| 11 | 6 × ((12 + 4) ÷ 4) | |
| 12 | 12 × (4 ÷ (6 − 4)) | |
| 13 | (12 + 4) × (6 ÷ 4) | |
| 14 | (12 + 4) ÷ (4 ÷ 6) | |
| 15 | 6 ÷ (4 ÷ (12 + 4)) | |
| 16 | 12 ÷ ((6 − 4) ÷ 4) | |
| 17 | 4 ÷ ((6 − 4) ÷ 12) | |