38.2×7.5+75+0.75×518如何简便方法运算?
问题描述:
38.2×7.5+75+0.75×518如何简便方法运算?
答
38.2×7.5+75+0.75×518
=3.82×75+75+75×5.18
=75×﹙3.82+1+5.18﹚
=75×10
=750