80-12.4-16.7-7.6-3.3怎样简便计算?

2024-11-24 01:07:47
推荐回答(5个)
回答1:

用小括号啊!

回答2:

80-12.4-16.7-7.6-3.3


=80-(12.4+7.6+16.7+3.3)


=80-(20+20)


=80-40


=40

回答3:

80-(12.4+16.7+7.6+3.3)=80-(12.4+7.6+16.7+3.3)=40

回答4:

简便计算
80-12.4-16.7-7.6-3.3
=80-(12.4+7.6)-(16.7+3.3)
=80-20-20
=40

回答5:

=80-(12.4+7.6)-(16.7+3.3)
=80-20-20
=40