题目内容
| 口算． 7.2+2.8= | 0.27-0.2= | 4.9+1.01= |
| 0.9-0.6÷2= | 1.25×0.8= | 2.5×4= |
| 100÷0.01= | 1÷0.25×4= | 3.2×0.2×0.5= |
| 1.8÷0.45÷2= | 2.4-2.4÷2.4= | （1.8+1.7）÷0.7= |
| 7.2+2.8=10 | 0.27-0.2=0.07 | 4.9+1.01=5.91 |
| 0.9-0.6÷2=0.6 | 1.25×0.8=1 | 2.5×4=10 |
| 100÷0.01=10000 | 1÷0.25×4=16 | 3.2×0.2×0.5=0.32 |
| 1.8÷0.45÷2=2 | 2.4-2.4÷2.4=1.4 | （1.8+1.7）÷0.7=5 |
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