直接寫得數(shù)
4
11
÷4=
4
5
÷
1
2
=
5
8
÷
2
3
=
21
5
=
3
10
÷1=
2
3
÷1
1
3
=
13÷
13
15
=
105÷
35
37
=
1.6÷
4
15
=
9
10
÷
9
20
=
分析:分?jǐn)?shù)除法的計(jì)算法則:除以一個(gè)不為零的數(shù)等于乘上這個(gè)數(shù)的倒數(shù),由此進(jìn)行求解.
解答:解:
4
11
÷4=
1
11
,
4
5
÷
1
2
=
8
5
,
5
8
÷
2
3
=
15
16
,
21
5
=
5
3
,
3
10
÷1=
3
10
2
3
÷1
1
3
=
1
2
,
13÷
13
15
=15,
105÷
35
37
=111,
1.6÷
4
15
=6,
9
10
÷
9
20
=2.
點(diǎn)評(píng):本題考查了簡(jiǎn)單的分?jǐn)?shù)乘法計(jì)算,計(jì)算時(shí)要細(xì)心,注意把結(jié)果化成最簡(jiǎn)分?jǐn)?shù).
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