问题 解答题
12÷(
6
7
×
14
15
)   
7
48
÷(
7
12
-
1
8
)  
1
1
6
+3÷
9
10
9
17
×
6
7
-
8
17
÷7
5
6
÷
2
3
×
1
2
2
3
+
1
3
×
3
7
答案

(1)12÷(

6
7
×
14
15
) 

=12÷

4
5

=12×

5
4

=15;

(2)

7
48
÷(
7
12
-
1
8
) 

=

7
48
÷
11
24

=

7
48
×
24
11

=

7
22

(3)1

1
6
+3÷
9
10

=

7
6
+
10
3

=

9
2

(4)

9
17
×
6
7
-
8
17
÷7

=

54
119
-
8
17
×
1
7

=

54
119
-
8
119

=

46
119

(5)

5
6
÷
2
3
×
1
2

=

5
6
×
3
2
×
1
2

=

5
8

(6)

2
3
+
1
3
×
3
7

=

2
3
+
1
7

=

17
21

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