(-370)x(-1/4)+0.25x24.5+(-11/2)x(0.25)用简便方法计算

问题描述:

(-370)x(-1/4)+0.25x24.5+(-11/2)x(0.25)用简便方法计算

(-370)x(-1/4)+0.25x24.5+(-11/2)x(0.25)=(370+24.5+-11/2)x1/4=389/4