6.25-(2.97+1.75)这道题怎么简算?

9.9*5.5+0.55这道题怎么简算?
2025-05-23 21:35:19
推荐回答(5个)
回答1:

6.25-(2.97+1.75)

=6.25-2.97-1.75

=6.25-(3-0.03)-(2-0.25)

=6.25-3+0.03-2+0.25

=6.5-5+0.03

=1.5+0.03

=1.53

9.9*5.5+0.55

=5.5*(9.9+0.1)

=5.5*10

=55

回答2:

6.25-(3+1.50+0.25-.0.03)

6.25-(4.0+.0.50+0.25-0.03)
6.25-4.0-.050-0.25

回答3:

6.25-(2.97+1.75)=(6.25-1.75)-2.97=4.5-2.97=1.53

回答4:

6.25-(2.97+1.75)=6.25-(3-0.03+1.75)=6.25-(3+1.72)=6.25-4.72=1.53

回答5:

=6.25-2.97-1.75
=6.25-1.75-2.97
=4.5-2.97
=4.5-(3-0.03)
=1.5+0.03
=1.53