简便计算:3.7乘以0.15+4.02= 4.8-4.8乘以0.5=
问题描述:
简便计算:3.7乘以0.15+4.02= 4.8-4.8乘以0.5=
答
3.7乘以0.15+4.02=3.7*3*0.05+4.02=11.1*0.05+4.02=0.111+4.02=4.121
4.8-4.8*0.5=4.8*(1-0.5)=4.8*0.5=2.4