题目内容

能简算的要简算.
7
10
÷8÷
14
5
1
4
×
8
9
÷
9
10
2
3
×
8
5
+
1
3
÷
5
8
1
4
-
1
20
)×40    
3
4
×[(
7
15
-
1
5
)÷
2
3
]
(13+
1
9
)×
9
13
(1)
7
10
÷8÷
14
5

=
7
10
×
1
8
×
5
14

=
1
32


(2)
1
4
×
8
9
÷
9
10

=
1
4
×
8
9
×
10
9

=
20
81


(3)
2
3
×
8
5
+
1
3
÷
5
8

=
2
3
×
8
5
+
1
3
×
8
5

=(
2
3
+
1
3
)×
8
5

=1×
8
5

=
8
5


(4)(
1
4
-
1
20
)×40,
=
1
4
×40-
1
20
×40,
=10-2,
=8;

(5)
3
4
×[(
7
15
-
1
5
)÷
2
3
],
=
3
4
×[
4
15
×
3
2
],
=
3
4
×
2
5

=
3
10


(6)(13+
1
9
)×
9
13

=13×
9
13
+
1
9
×
9
13

=9+
1
13

=9
1
13
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