题目内容

怎样算简便就怎样算.
(1)(
1
2
+20%)×
5
6

(2)3.7×125%+1.25×2.7+1
1
4
×3.6.
(3)5×
3
4
+75%×6-0.75.
(1)(
1
2
+20%)×
5
6

=(
1
2
+
1
5
)×
5
6

=
7
10
×
5
6

=
7
12


(2)3.7×125%+1.25×2.7+1
1
4
×3.6,
=3.7×1.25+1.25×2.7+1.25×3.6,
=1.25×(3.7+2.7+3.6),
=1.25×10,
=12.5;

(3)5×
3
4
+75%×6-0.75,
=5×0.75+0.75×6-0.75,
=(5+6-1)×0.75,
=10×0.75,
=7.5.
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网