试题:
直接写出得数:
2
9
+
3
9
=
8
12
-
5
12
=
1-
5
6
=
1
2
+
1
3
=
7
8
-
2
8
=
4+
6
7
=
3
8
-
1
4
=
4
5
+
1
5
=
9
10
-
1
2
=
2
3
+
1
4
=

答案:

我来补答
2
9
+
3
9
=
5
9
8
12
-
5
12
=
1
4
1-
5
6
=
1
6
1
2
+
1
3
=
5
6
7
8
-
2
8
=
5
8
4+
6
7
=4
6
7
3
8
-
1
4
=
1
8
4
5
+
1
5
=1
9
10
-
1
2
=
2
5
2
3
+
1
4
=
11
12
故填:
5
9
1
4
1
6
5
6
5
8
,4
6
7
1
8
,1,
2
5
11
12
 
 
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