5/9*0.36*1/2的简便计算方法
问题描述:
5/9*0.36*1/2的简便计算方法
答
5/9*0.36*1/2
=5/9*0.9*0.4*1/2
=(5*0.1)*0.2
=0.5*0.2
=0.1