2.5×0.32x1.25用简便方法计算2.5×0.32×1.25用简便方法计算如下:2.5×0.32×1.25=2.5×1.25×0.4×0.8=(2.5×0.4)x(1.25×0.8)=1×1=1...赞(0)阅读(123)