题目内容

能简算的要简算.
(1)5.5-62.5%-
3
8
+3
2
5

(2)24×(25%-
1
6
+0.125);
(3)
2
5
×
3
7
+0.4+
4
7
×40%.
(1)5.5-62.5%-
3
8
+3
2
5

=5.5-0.625-0.375+3.4
=5.5-(0.625+0.375)+3.4
=5.5-1+3.4
=4.5+3.4
=7.9;

(2)24×(25%-
1
6
+0.125)
=24×(
1
4
-
1
6
+
1
8

=24×
1
4
-24×
1
6
+24×
1
8

=6-4+3
=5;

(3)
2
5
×
3
7
+0.4+
4
7
×40%
=
2
5
×
3
7
+
2
5
×1+
4
7
×
2
5

=
2
5
×(
3
7
+1+
4
7

=
2
5
×2
=
4
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