题目内容

看谁算的对.
5
8
÷
16
7
÷
14
11
3
8
×
5
6
×
24
35
19
26
÷
38
55
×
5
11
12÷
3
5
×
3
25
5
8
÷
7
12
÷
7
10
1
2
÷
5
4
×
2
3
分析:(1)(4)先把除法变成乘法,再运用乘法结合律简算;
(2)(3)(5)(6)按照从左到右的顺序计算.
解答:解:(1)
5
8
÷
16
7
÷
14
11

=
5
8
×(
7
16
×
11
14
),
=
5
8
×
11
32

=
55
256


(2)
3
8
×
5
6
×
24
35

=
5
16
×
24
35

=
3
14


(3)
19
26
÷
38
55
×
5
11

=
19
26
×
55
38
×
5
11

=
55
52
×
5
11

=
25
52


(4)12÷
3
5
×
3
25

=12×(
5
3
×
3
25
),
=12×
1
5

=
12
5


(5)
5
8
÷
7
12
÷
7
10

=
5
8
×
12
7
×
10
7

=
15
14
×
10
7

=
150
98


(6)
1
2
÷
5
4
×
2
3

=
2
5
×
2
3

=
4
15
点评:本题考查了学生通过约分对分数四则混合运题目进行简算的能力.
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