口算顯身手!
3
4
=
15
8
÷2
=
3
4
=
2
3
÷
3
2
=
1
3
÷
1
2
=
5
7
÷
5
2
=
14
9
÷
7
30
=
13
36
÷26
=
9
14
÷
3
7
=
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).
解答:解:
3
4
=4,
15
8
÷2
=
15
16
,
3
4
=12,
2
3
÷
3
2
=
4
9
,
1
3
÷
1
2
=
2
3
,
5
7
÷
5
2
=
2
7
,
14
9
÷
7
30
=
20
3
13
36
÷26
=
1
72
,
9
14
÷
3
7
=
3
2
點(diǎn)評(píng):本題考查了分?jǐn)?shù)除法的計(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).
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

同步練習(xí)冊(cè)答案