问题 解答题
直接写出得数.
3
4
+
1
2
=
1
3
-
1
4
=
12×
3
4
=
20÷
4
9
=
2
3
×
7
8
=
2
5
÷
3
2
=
2
13
=
1
2
÷
2
3
=
2
7
×14
=
1
5
÷3
=
答案

3
4
+
1
2
=
5
4
1
3
-
1
4
=
1
12
12×
3
4
=9
20÷
4
9
=45
2
3
×
7
8
=
7
12
2
5
÷
3
2
=
4
15
2
13
=0
1
2
÷
2
3
=
3
4
2
7
×14
=4
1
5
÷3
=
1
15
故答案为:
5
4
1
12
,9,45,
7
12
4
15
,0,
3
4
,4,
1
15

单项选择题
单项选择题 A2型题