328乘以负0.25减147乘以负0,125加253乘以8分之1加72乘以负4分之1快,谢谢

问题描述:

328乘以负0.25减147乘以负0,125加253乘以8分之1加72乘以负4分之1
快,谢谢

320×(-0.25)-147×(-0.125)+253×1/8+72×(-1/4)=-80+18.375+31.625-8=-38