看誰算的對(duì).
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)先把除法變成乘法,再運(yùn)用乘法結(jié)合律簡算;
(2)(3)(5)(6)按照從左到右的順序計(jì)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
點(diǎn)評(píng):本題考查了學(xué)生通過約分對(duì)分?jǐn)?shù)四則混合運(yùn)題目進(jìn)行簡算的能力.
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科目:小學(xué)數(shù)學(xué) 來源: 題型:

看誰算的又對(duì)又快
2
3
×
1
2
4
7
×
7
8
;
9
35
÷
3
14
;
5
8
×
4
15
;
18×
7
12
;
5
6
÷
1
14
3
22
;
44÷
4
5

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