问题 解答题
1
2
+
1
2
=
3
4
-
1
4
=
1+
5
7
=
3
8
-
3
8
=
答案

1
2
+
1
2
=1,
3
4
-
1
4
=
1
2
1+
5
7
=1
5
7
3
8
-
3
8
=0.
故答案为:1,
1
2
,1
5
7
,0.

问答题 简答题
填空题