问题 解答题
直接写出得数.
8
11
+
3
11
=

3
5
-
1
5
=

1
3
+
1
6
=

3
4
-
1
2
=
1
2
+
2
5
=
1-
5
7
=
3
7
-
2
7
=
1
8
+
3
4
=
答案

8
11
+
3
11
=1,

3
5
-
1
5
=
2
5

1
3
+
1
6
=
1
2

3
4
-
1
2
=
1
4
1
2
+
2
5
=
9
10
1-
5
7
=
2
7
3
7
-
2
7
=
1
7
1
8
+
3
4
=
7
8

单项选择题 A1/A2型题
单项选择题