3
13
×
26
37
18
21
×
7
9
1
8
×14÷
7
8
4
5
+
3
10
)÷
3
10
5
6
÷(
1
2
+
5
6
3
4
÷
15
16
÷
5
6
分析:根據(jù)分數(shù)加減乘除法的計算法則進行計算即可.
解答:解:(1)
3
13
×
26
37
,
=
6
37
;

(2)
18
21
×
7
9
,
=
2
3
;

(3)
1
8
×14÷
7
8

=
1
8
×14×
8
7
,
=2;

(4)(
4
5
+
3
10
)÷
3
10

=
11
10
÷
3
10
,
=
11
10
×
10
3
,
=
11
3
;

(5)
5
6
÷(
1
2
+
5
6
),
=
5
6
÷
8
6
,
=
5
6
×
6
8
,
=
5
8


(6)
3
4
÷
15
16
÷
5
6
,
=
3
4
×
16
15
×
6
5
,
=
24
25
點評:考查了分數(shù)四則運算的計算方法,除以一個分數(shù)(不為0)等于乘這個分數(shù)的倒數(shù).
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