有理数乘法简便计算（1道）(-5.25)*(-4.73)-4.73*(-19.75)-25*(-5.27)=?简便的,THANK _其他解答

有理数乘法简便计算（1道）
(-5.25)*(-4.73)-4.73*(-19.75)-25*(-5.27)=?
简便的,THANK YOU!

人气：266 ℃　时间：2020-03-26 18:01:49

解答

(-5.25)*(-4.73)-4.73*(-19.75)-25*(-5.27)
=5.25*4.73+4.73*19.75+25*5.27
=4.73*(5.25+19.75)+25*5.27
=4.73*25+25*5.27
=25*(4.73+5.27)
=25*10
=250