题目列表(包括答案和解析)
| 487-198= |  - = | 0.6×0.25= |  ×33= |
| 4.8÷0.01= |  + ×2= |  × = | 48×（ - ）= |
（ +）×21= | 3508÷69= |  ÷5= | 42.7+ -42.7+= |
| 0.42÷7= | 2÷5= | 1÷0.2= | 7÷8= |
| 8.4÷2.1= | 0.69÷1= | 1.26÷0.6= | 0.5÷0.2= |
| 0.9×100÷1000= | 12.4-（2.4+3.25）= | 0.01÷0.001×0.1= | 0.5×0.1÷0.5×0.1= |
| 0.42÷7= | 2÷5= | 1÷0.2= | 7÷8= |
| 8.4÷2.1= | 0.69÷1= | 1.26÷0.6= | 0.5÷0.2= |
| 0.9×100÷1000= | 12.4-（2.4+3.25）= | 0.01÷0.001×0.1= | 0.5×0.1÷0.5×0.1= |
| 142-69= | 0.56÷8= | 1.2×= |
| 5.4+9= | 0.6×0.6= | 7 ÷0.8= |
| 5.1÷0.01= | 1 ÷175%= | 3--= |
 ×5×7= |
| 直接写出得数． 6.3+3.7= |
9-1.8= | 1.4×0.5= |
| 0.49÷0.7= | 1.53+0.8= | 3.9-0.39= |
| 0.25×12= | 0.51÷0.3= | 9.2×0.01= |
| 70÷0.5= | 0.16×0.6= | 0.69÷2.3= |
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