题目内容

1
4
×
3
5
÷
9
8
3
5
÷
1
20
÷
3
4
2
3
-
1
4
)÷
5
6
5
8
÷(
1
2
+
1
4
8
13
÷7+
1
7
×
6
13
1
2
-
1
8
÷
5
12
(1)
1
4
×
3
5
÷
9
8

=
1
4
×
8
9
×
3
5

=
2
9
×
3
5

=
2
15


(2)
3
5
÷
1
20
÷
3
4

=12÷
3
4

=16;

(3)(
2
3
-
1
4
)÷
5
6

=
5
12
×
6
5

=
1
2


(4)
5
8
÷(
1
2
+
1
4
),
=
5
8
÷
3
4

=
5
6


(5)
8
13
÷7+
1
7
×
6
13

=
8
13
×
1
7
+
1
7
×
6
13

=(
8
13
+
6
13
)×
1
7

=
14
13
×
1
7

=
2
13


(6)
1
2
-
1
8
÷
5
12

=
1
2
-
3
10

=
1
5
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