问题 解答题
11
12
-
2
3
)÷
11
24
(1+
7
9
)×18
7
8
÷
35
36
×
5
6
4
9
×
7
15
+
4
9
×
2
15
5
6
-
4
11
×
33
32
18÷(
8
9
-
2
3
答案

(1)(

11
12
-
2
3
)÷
11
24

=

1
4
×
24
11

=

6
11

(2)(1+

7
9
)×18

=1×18+

7
9
×18

=18+14

=32;

(3)

7
8
÷
35
36
×
5
6

=

7
8
×
36
35
×
5
6

=

3
4

(4)

4
9
×
7
15
+
4
9
×
2
15

=

4
9
×(
7
15
+
2
15

=

4
9
×
3
5

=

4
15

(5)

5
6
-
4
11
×
33
32

=

5
6
-
3
8

=

11
24

(6)18÷(

8
9
-
2
3

=18÷

2
9

=81.

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