5.3减5.3乘以0.9怎么简便计算
问题描述:
5.3减5.3乘以0.9怎么简便计算
答
=5.3-5.3*(0.9+0.1)-0.1*5.3
=5.3-53-0.53
=53-(5.3+0.53)
=53-5.83
=47.17
答
5.3x(1-0.9)=5.3x0.1=0.53
答
5.3-5.3*0.9
=5.3(1-0.9)
=5.3*0.1
=0.53