0.6×0.2= 30÷0.5= 0.1÷0.01= 1-0.28=
2.4÷0.8= 8.1÷0.3= 1.25÷12.5= 7.8÷2=
5.7×0.2= 0.25×0.4= 2.5÷5×2.5÷5= 1.5+0.3-1.5+0.3=
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