题目内容

1
1
17
×3
7
9
5
13
×
1
4
+
3
4
×
5
13
10
4
7
×14
42
2
9
-7
1
2
×5
1
3
12×1
3
8
×
14
33
2
1
4
×(1
8
9
+2
2
3
(1)1
1
17
×3
7
9
=4;

(2)
5
13
×
1
4
+
3
4
×
5
13

=(
1
4
+
3
4
)×
5
13

=1×
5
13

=
5
13


(3)10
4
7
×14=148;

(4)42
2
9
-7
1
2
×5
1
3

=42
2
9
-40,
=2
2
9


(5)12×1
3
8
×
14
33

=12×(1
3
8
×
14
33
),
=12×
7
6

=14;

(6)2
1
4
×(1
8
9
+2
2
3
),
=2
1
4
×1
8
9
+2
1
4
×
2
2
3

=
17
4
+
24
4

=10
1
4
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