如何用简单方法计算12.5x0.38+1.25x4.2+0.125x20
问题描述:
如何用简单方法计算12.5x0.38+1.25x4.2+0.125x20
答
原式=0.125x38+0.125x42+0.125x20=0.125x(38+42+20)=0.125x100=12.5
如何用简单方法计算12.5x0.38+1.25x4.2+0.125x20
原式=0.125x38+0.125x42+0.125x20=0.125x(38+42+20)=0.125x100=12.5