简便计算 8.42/5+2.58*0.2-0.5
问题描述:
简便计算 8.42/5+2.58*0.2-0.5
答
=(8.42+2.58)/5-0.5
=11-0.5=10.5
简便计算 8.42/5+2.58*0.2-0.5
=(8.42+2.58)/5-0.5
=11-0.5=10.5