简便计算:5.6*8+4.5/0.25=?7.5*【63.9/(7-2.5)】=?5.5*8+4.5/0.125=?26.19+0.91/(3.6-2.9)=?
问题描述:
简便计算:5.6*8+4.5/0.25=?7.5*【63.9/(7-2.5)】=?5.5*8+4.5/0.125=?26.19+0.91/(3.6-2.9)=?
答
5.6*8+4.5/0.25=5.6*8+4.5/(1/4)=5.6*8+4.5*4=44.8+18=62.87.5*【63.9/(7-2.5)】=7.5*【63.9/(4.5)】=7.5*【0.9*71/(0.9*5)】=7.5*【71/5】=15/2*71/5=3/2*71=1.5*71=106.55.5*8+4.5/0.125=5.5*8+4.5/(1/8)=5....