算一算.
5
8
÷
5
16
=
5
7
=
8
14
÷
2
7
=
5
12
÷
7
10
=
24÷
1
8
=
30÷
2
5
=
5
9
÷10
=
7
8
÷3
=
25÷
5
13
=
6
11
÷
2
3
=
分析:通過觀察,都是一個數(shù)除以分數(shù)的題目,先把除法轉(zhuǎn)變?yōu)槌朔�,能約分的要約分.據(jù)此解答.
解答:解:①
5
8
÷
5
16

=
5
8
×
16
5

=2

5
7

=3×
7
5

=
21
5


8
14
÷
2
7

=
8
14
×
7
2

=2

5
12
÷
7
10

=
5
12
×
10
7

=
25
42


⑤24÷
1
8

=24×8
=192

⑥30÷
2
5

=30×
5
2

=75

5
9
÷10
=
5
9
×
1
10

=
1
18


7
8
÷3
=
7
8
×
1
3

=
7
24


⑨25÷
5
13

=25×
13
5

=65

6
11
÷
2
3

=
6
11
×
3
2

=
9
11
點評:根據(jù)分數(shù)除法的計算法則進行計算,先把除法變?yōu)槌朔�,再計算�?/div>
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