题目内容

用自己喜欢的方法计算.
3.6×(1-20%)

3-
7
12
-
5
12
5
7
×
3
8
+
5
8
×
5
7
1
4
+
5
6
-
1
3
)×12.
①3.6×(1-20%),
=3.6×0.8,
=2.88;

②3-
7
12
-
5
12

=3-(
7
12
+
5
12
),
=3-1,
=2;

5
7
×
3
8
+
5
8
×
5
7

=
5
7
×(
3
8
+
5
8
),
=
5
7
×1,
=
5
7


④(
1
4
+
5
6
-
1
3
)×12,
=
1
4
×12+
5
6
×12-
1
3
×12,
=3+10-4,
=9.
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