6.27×3.6+37.8×0.36 369×0.99+3.69 （0.64+0.32）÷0.64 13.5×2.5-0.35×25的简便算法
问题描述：
6.27×3.6+37.8×0.36 369×0.99+3.69 （0.64+0.32）÷0.64 13.5×2.5-0.35×25的简便算法
答
6.27*3.6+3.78*3.6=3.6*(6.27+3.78)=3.6*10.05=3.6*(10+0.05)=36+0.18=36.18
369*(0.99+1)=369*(2-0.01)=738-3.69=734.31
0.64/0.64+0.32/0.64=1+(1/2)=1.5
1.35*25-0.35*25=25*(1.35-0.35)=25*1=25
答
6.27×3.6+37.8×0.36 369×0.99+3.69 （0.64+0.32）÷0.64 13.5×2.5-0.35×256.27×3.6+37.8×0.36=6.27*3.6+3.78*3.6=3.6*(6.27+3.78)=3.6*(10+0.05)=36+0.18=36.18369×0.99+3.69 =369*0.99+369*0.01=369*(0.99+...