题目内容

计算
1
4
÷
5
6
×
5
12

9
5
÷
2
3
÷
1
4

5
8
×
4
5
÷
1
2
5
7
×
7
8
×
3
10
1
13
×39×
5
21
5
3
÷10÷
5
6
(1)
1
4
÷
5
6
×
5
12

=
1
4
×(
6
5
×
5
12
),
=
1
4
×
1
2

=
1
8


(2)
9
5
÷
2
3
÷
1
4

=
9
5
×
3
2
×4,
=
54
5


(3)
5
8
×
4
5
÷
1
2

=
1
2
×2,
=1;

(4)
5
7
×
7
8
×
3
10

=
5
8
×
3
10

=
3
16


(5)
1
13
×39×
5
21

=3×
5
21

=
5
7


(6)
5
3
÷10÷
5
6

=
5
3
×
1
10
×
6
5

=
1
5
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