8
11
÷4=
5
6
÷25=
16
27
÷20=
65
74
÷26=
5
12
+
1
2
-
2
3
=
5
9
×
3
5
×
1
2
=
7
8
×
5
14
÷
5
16
=
4-7×
1
7
=
4
5
-
2
3
)×
15
2
=
5
8
-
3
16
)×(
5
7
+
1
7
)=
24÷
8
5
=
39÷
13
15
=
35÷
5
14
=
5
8
÷
5
12
=
11
16
÷
3
4
=
18
25
÷
3
10
=
4
5
÷4=
63÷
7
9
=
2
9
÷
2
3
=
11
5
÷3=
9
32
÷6=
8
9
÷
16
21
=
15÷
1
2
÷
2
3
5
6
-0.8
5
9
×
12
13
÷
4
13
5
9
×0.6÷
2
3
(0.75+
1
8
)×(
2
7
-
1
14
分析:分數(shù)除法:除以一個不為零的數(shù)等于乘上這個數(shù)的倒數(shù);
混合運算先找清計算的順序,然后再按照運算順序計算即可.
解答:解:
8
11
÷4=
2
11
,
5
6
÷25=
1
30
,
16
27
÷20=
4
135
,
65
74
÷26=
5
148
,
5
12
+
1
2
-
2
3
=
1
4
,
5
9
×
3
5
×
1
2
=
1
6
,
7
8
×
5
14
÷
5
16
=1,
4-7×
1
7
=3,
4
5
-
2
3
)×
15
2
=1,
5
8
-
3
16
)×(
5
7
+
1
7
)=
3
8
24÷
8
5
=15,
39÷
13
15
=45,
35÷
5
14
=98,
5
8
÷
5
12
=
2
3
,
11
16
÷
3
4
=
11
12
18
25
÷
3
10
=
12
5
,
4
5
÷4=
1
5
63÷
7
9
=81,
2
9
÷
2
3
=
1
3
11
5
÷3=
11
15
,
9
32
÷6=
3
64
8
9
÷
16
21
=
7
6
,
15÷
1
2
÷
2
3
=45,
5
6
-0.8=4,
5
9
×
12
13
÷
4
13
=
5
3
,
5
9
×0.6÷
2
3
=
1
2
,
(0.75+
1
8
)×(
2
7
-
1
14
)=
3
16
點評:本題考查了有關分數(shù)的計算,計算時要細心,注意把結果化成最簡分數(shù).
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