5.4乘0.72除以0.72除以5.4的简便方法

问题描述:

5.4乘0.72除以0.72除以5.4的简便方法

5.4×0.72÷0.72÷5.4
=5.4×﹙0.72÷0.72﹚÷5.4
=5.4×1÷5.4
=5.4÷5.4
=1