题目列表(包括答案和解析)
| 0.1×0.3×0.9+0.2×0.6×1.8+0.3×0.7×2.7 | 0.1×0.2×0.4+0.2×0.4×0.8+0.3×0.6×1.2 |
| 1.3-0.7= | 2.4+0.6= | 7×99+7= | 24-19+24+19= |
| 7.5-2.8= | 4×（36-25）= | 4.3+1.5= | 300-84-16= |
| 2-1.1= | 5.5-3.2= | 120÷6÷2= | 3.7+2.5= |
| 1.3-0.7= | 2.4+0.6= | 7×99+7= | 24-19+24+19= |
| 7.5-2.8= | 4×（36-25）= | 4.3+1.5= | 300-84-16= |
| 2-1.1= | 5.5-3.2= | 120÷6÷2= | 3.7+2.5= |
| 7.2÷0.8= | 1.08+0.8= | 27.9÷30= | 3.4÷17= | 0.16÷0.016= |
| 2.3×0.4= | 4×0.25= | 7.5÷0.15= | 5.4×5.4÷5.4×5.4= | 7.6×8+2.4×8= |
 += | |||
 - =7.2÷0.3=  -1= +0.2=0.54÷9=  - = -= -= + = | |||
| 1÷0.25= | |||
 + = | |||
| 0.67+0.3= 0.38×2= 8.1÷0.09= 2- = |
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