题目内容

计算下面各题,能简便计算的要简便计算.
8
3
×
7
5
÷
8
3
×
7
5
5
6
×13-
5
6
9
10
÷〔
3
4
×(1-
2
5
)〕
7
9
÷
11
5
+
2
9
×
5
11
9
8
-
5
7
-
2
7
1
2
-
4
25
÷
2
5
(1)
8
3
×
7
5
÷
8
3
×
7
5

=(
8
3
÷
8
3
)×(
7
5
×
7
5
),
=1×
49
25

=1
24
25


(2)
5
6
×13-
5
6

=
5
6
×(13-1),
=
5
6
×
12,
=10;

(3)
9
10
÷〔
3
4
×(1-
2
5
)〕,
=
9
10
÷〔
3
4
×
3
5
〕,
=
9
10
÷
9
20

=2;

(4)
7
9
÷
11
5
+
2
9
×
5
11

=(
7
9
+
2
9
)×
5
11

=1×
5
11

=
5
11


(5)
9
8
-
5
7
-
2
7

=
9
8
-(
5
7
+
2
7
),
=
9
8
-
1,
=
1
8


(6)
1
2
-
4
25
÷
2
5

=
1
2
-
2
5

=
1
10
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