问题 解答题
1
8
+
5
8
=
5
6
+
1
6
=
9
14
-
5
14
=
11
25
+
9
25
=
7
18
+
1
18
+
5
18
=
7
10
+
1
10
-
1
10
=
10
21
-
8
21
-
2
21
=
9
16
-
5
16
+
3
16
=
答案

1
8
+
5
8
=
3
4
;             
5
6
+
1
6
=1;             
9
14
-
5
14
=
2
7
;        
11
25
+
9
25
=
4
5

7
18
+
1
18
+
5
18
=
13
18
;        
7
10
+
1
10
-
1
10
=
7
10
;    
10
21
-
8
21
-
2
21
=0;      
9
16
-
5
16
+
3
16
=
7
16

单项选择题
综合