来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/09/20 23:18:15
简便运算,20分悬赏
6050-6300/42
(2.5-2.5*0.6)/4
(315+270)/(1.3*5)
我很急啊!!求你了~!!!!!!!!!!!!!!!!!!!!!!
6050-6300/42
=6050-7*6*150/(7*6)
=6050-150
=5900
(2.5-2.5*0.6)/4
=2.5(1-0.6)/4
=2.5*0.4/4
=2.5*0.1
=0.25
(315+270)/(1.3*5)
=585/(1.3*5)
=(13*5*9)/(1.3*5)
=10*9
=90
祝你开心