3.87 ÷ (38.7 ×0.4)用简便方法计算
问题描述:
3.87 ÷ (38.7 ×0.4)用简便方法计算
答
3.87 ÷ (38.7 ×0.4)
=3.87 ÷ 38.7 ÷0.4……除以两个数的积,等于分别除以这两个数.
=0.1÷0.4
=0.25