题目内容

脱式计算.
2
3
+
1
2
+
3
8
8-
7
14
-
5
13
1-
1
5
-
4
5
+
4
7
7
8
-(
1
4
+
1
5
)
4
5
-(
4
5
-
2
3
)
9
11
-
2
5
+
2
5
+
5
11
(1)
2
3
+
1
2
+
3
8

=
16
24
+
12
24
+
9
24

=
37
24


(2)8-
7
14
-
5
13

=
1456
182
-
91
182
-
70
182

=
1295
182


(3)1-
1
5
-
4
5
+
4
7

=1-(
1
5
+
4
5
)+
4
7

=1-1+
4
7

=
4
7


(4)
7
8
-(
1
4
+
1
5

=
7
8
-
9
20

=
17
40


(5)
4
5
-(
4
5
-
2
3

=
4
5
-
4
5
+
2
3

=
2
3


(6)
9
11
-
2
5
+
2
5
+
5
11

=(
9
11
+
5
11
)-(
2
5
-
2
5

=
14
11
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