问题 解答题
脱式计算
5
8
÷(1-
3
4
×
2
5

2
3
-
1
3
÷
5
9
)×
9
10
12+
6
5
×(
4
5
-
1
3

3
4
-
3
4
÷3+
9
25
答案

5
8
÷(1-
3
4
×
2
5

=

5
8
×
10
7

=

25
28

2
3
-
1
3
÷
5
9
)×
9
10

=(

2
3
-
3
5
)×
9
10

=

1
15
×
9
10

=

3
50

12+

6
5
×(
4
5
-
1
3

=12+

6
5
×
7
15

=12+

14
25

=12

14
25

3
4
-
3
4
÷3+
9
25

=

3
4
-
1
4
+
9
25

=

1
2
+
9
25

=

43
50

单项选择题
单项选择题