465x8.2+465x29.6-365x37.8的简便运算(快)我急用啊!

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/06 10:55:39

465x8.2+465x29.6-365x37.8的简便运算(快)我急用啊!
465x8.2+465x29.6-365x37.8的简便运算(快)我急用啊!

465x8.2+465x29.6-365x37.8的简便运算(快)我急用啊!
465×8.2+465×29.6-365×37.8
=465×(8.2+29.6)-365×37.8
=465×37.8-365×37.8
=37.8×(465-365)
=37.8×100
=3780

465x8.2+465x29.6-365x37.8
=465×(8.2+29.6-37.8)
=465×0
=0

先合并前两项得到465*37.8-365*37.8,继续合并得到100*37.8,等于3780

465*(8.2+29.6)-365*37.8=37.8*(465-365)=3780

465x8.2+465x29.6-365x37.8
=465x(8.2+29.6)-365x37.8
=465x37.8-365x37.8
=(465-365)×37.8
=100×37.8
=3780