5.4除以(0.9*0.3)用简便计算怎么算
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5.4÷0.9×0.3
=5.4÷(1-0.1)×0.3
=(5.4÷1-5.1÷0.1)×0.3
=(5.4-0.54)×0.3
=4.86×0.3
=1.458
=5.4÷(1-0.1)×0.3
=(5.4÷1-5.1÷0.1)×0.3
=(5.4-0.54)×0.3
=4.86×0.3
=1.458
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