3.25*1.3+67.5*0.31= 简便计算
问题描述：
3.25*1.3+67.5*0.31= 简便计算
答
应该是3.25×1.3+67.5×0.13=32.5×0.13+67.5×0.13=0.13×（32.5+67.5）=0.13×100=13
3.25*1.3+67.5*0.31= 简便计算
应该是3.25×1.3+67.5×0.13=32.5×0.13+67.5×0.13=0.13×（32.5+67.5）=0.13×100=13