题目内容

计算下面各题:
(1)2011+450÷15×30(2)10÷
5
8
×
4
15
(3)
9
20
÷6+
1
6
×
1
20
(4)
9
10
÷[
1
2
×(
6
5
-
3
10
)].
(1)2011+450÷15×30,
=2011+30×30,
=2011+900,
=2911;

(2)10÷
5
8
×
4
15

=16×
4
15

=
64
15


(3)
9
20
÷6+
1
6
×
1
20

=
9
20
×
1
6
+
1
6
×
1
20

=(
9
20
+
1
20
)×
1
6

=
1
2
×
1
6

=
1
12


(4)
9
10
÷[
1
2
×(
6
5
-
3
10
)],
=
9
10
÷[
1
2
×
9
10
],
=
9
10
÷
9
20

=2.
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