(7.25*40%+二又四分之三*五分之二)/20%简便运算
问题描述:
(7.25*40%+二又四分之三*五分之二)/20%简便运算
答
=(7.25*0.4+2.75*0.4)/0.2=(7.25+2.75)*0.4/0.2=10*0.4/0.2=4/0.2=20
(7.25*40%+二又四分之三*五分之二)/20%简便运算
=(7.25*0.4+2.75*0.4)/0.2=(7.25+2.75)*0.4/0.2=10*0.4/0.2=4/0.2=20