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