题目内容

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
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
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