早教吧 育儿知识 作业答案 考试题库 百科 知识分享

简便运算(275+326*274)/(275*326-51)2091-5.5*75-0.25*55-4523.42+46.84*0.5378*0.25+0.5378*46.84*0.75-8*46.84*0.125*0.5378要有过程哟,答的好的加分

题目详情
简便运算
(275+326*274)/(275*326-51)
2091-5.5*75-0.25*55-45
23.42+46.84*0.5378*0.25+0.5378*46.84*0.75-8*46.84*0.125*0.5378
要有过程哟,答的好的加分
▼优质解答
答案和解析
(275+326*274)/(275*326-51)
=(275+326*275-326)/(275*326-51)
=(326*275-51)/(275*326-51)
=1
2091-5.5*7.5-0.25*55-45
=2091-(5.5*7.5+0.25*55)-45
=2091-(55*0.75+0.25*55)-45
=2091-(55*(0.75+0.25))-45
=2091-55-45
=2091-(55+45)
=2091-100
=1991
23.42+46.84*0.5378*0.25+0.5378*46.84*0.75-8*46.84*0.125*0.5378
=23.42+0.5378*46.84*(0.25+0.75-8*0.125)
=23.42+0.5378*46.84*(1-1)
=23.42