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计算下面各题49+110+5915+715+415710-(34-25)137-512-7122324-16-38112+38+1112+58.

题目详情
计算下面各题
4
9
+
1
10
+
5
9
1
5
+
7
15
+
4
15
7
10
-(
3
4
-
2
5
1
3
7
-
5
12
-
7
12
23
24
-
1
6
-
3
8
1
12
+
3
8
+
11
12
+
5
8
▼优质解答
答案和解析
(1)
4
9
+
1
10
+
5
9

=
4
9
+
5
9
+
1
10

=
1
1
10
 
 


(2)
1
5
+
7
15
+
4
15

=
3
15
+
11
15

=
14
15


(3)
7
10
-(
3
4
-
2
5

=
14
20
-
7
20

=
7
20


(4)1
3
7
-
5
12
-
7
12

=1
3
7
-(
5
12
+
7
12

=
1
3
7
 
 
-1
=
3
7


(5)
23
24
-
1
6
-
3
8

=
23
24
-
4
24
-
9
24

=
5
12


(6)
1
12
+
3
8
+
11
12
+
5
8

=(
1
12
+
11
12
)+(
3
8
+
5
8

=1+1
=2.