请算下面各题,怎样算简便就怎样算。 20.02-15.39-2.61?

20.02-15.39-2.61
2024-12-02 16:31:19
推荐回答(2个)
回答1:

20.02-(15.39+2。61)
=20.02-18
=2.02

回答2:

20.02-15.39-2.61
=20.02-(15.39+2.61)
=20.02-18
=2.02