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
答
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