问题 解答题
(1)(
1
12
+
1
6
5
24

(2)
3
8
÷75%-
2
19
×38%

(3)
5
6
÷
1
2
-
8
9
×
3
4
答案

(1)(

1
12
+
1
6
)÷
5
24

=

3
12
×
24
5

=

6
5

(2)

3
8
÷75%-
2
19
×38%,

=

3
8
×
4
3
-
2
19
×
19
50

=

1
2
-
1
25

=

23
50

(3)

5
6
÷
1
2
-
8
9
×
3
4

=

5
6
×2-
2
3

=

5
3
-
2
3

=1.

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