题目内容

直接写得数
1
8
+
3
8
=
5
6
-
1
6
=
2
3
-
1
6
=
1
12
+
7
12
=
1
4
-
1
5
=
7+
4
7
=
1
3
+
1
4
=
2
3
+
1
5
=
1-
1
7
=
5
6
-
1
12
=
1
8
+
3
8
=
1
2
5
6
-
1
6
=
2
3
2
3
-
1
6
=
1
2
1
12
+
7
12
=
2
3
1
4
-
1
5
=
1
20
7+
4
7
=7
4
7
1
3
+
1
4
=
7
12
2
3
+
1
5
=
13
15
1-
1
7
=
6
7
5
6
-
1
12
=
3
4
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