，商是| A．40、8 | B．40、0.08 | C．4、0.08 |
| 1÷0.2= | 0.85×0.24= | 7.5÷3= | 3.6÷6= |
| 1.7÷17= | 10﹣2.8= | 3.5+4.32= | 0.5×6.4= |
| 5.04÷0.01= | 3.75×1.2= | 4.13+3= | 0+2.5= |
| 0.7+0.2×1.5= | 0.125×99×0= | 2.3+1.7﹣2= | 2.5×0.4÷3= |
| A．5 | B．0.5 | C．0.05 |
| 15÷0.3= | 0.05×0.9= | 2.72﹣2.72×0.5= |
| 0.5÷0.5×0.1= | 3.8a+1.2a= | 1.2×0.4+1.3×0.4= |
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