摘要：3 0 4 1 5 2
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| 2.3×0.4= | 7.2÷0.9= | 3.2+0.25×4= |
| 0.25×3= | 4.8÷0.04= | 58-17.4-12.6= |
| 6.2×3.9≈ | 3.98×0.52≈ | 7.1×5.03≈ |
| 28.3÷7.08≈ | 12.2÷0.4≈ | 56÷7.12≈ |
| 2.4×1.5+3.6÷1.5 | 7.38-5.14+3.62-2.86 |
| 0.12×1.8+8.2×0.12 | 5.4÷[0.51÷（1.2-1.03）] |
| [（8.1-5.6）×0.9-1.05]÷0.04 |