15.6+(64.4-17.8)简便计算

2025-03-22 02:47:30
推荐回答(4个)
回答1:

15.6+(64.4-17.8)
=(15.6+64.4)-17.8
=70-17-0.8
=53-0.8
=52.2

回答2:

把括号去掉再进行计算。

15.6+(64.4-17.8)
=15.6+64.4-17.8
=80-17.8
=62.2

回答3:

=(15.6+64.4)-17.8

回答4:

=15+0.6+64+0.4 -17-0.8
=15+54-17
=54-2
=52