问题 解答题
直接写出得数.
5
6
×3
=
7
10
×
5
7
=
1
2
÷
2
3
=
1÷
3
2
=
2
13
=
3
4
+
1
2
=
1
5
÷2
=
4
5
-
7
10
=
20÷
4
9
=
2
3
×
3
4
÷
2
3
×
3
4
=
答案

5
6
×3
=
5
2
7
10
×
5
7
=
1
2
1
2
÷
2
3
=
3
4
1÷
3
2
=
2
3
2
13
=0,
3
4
+
1
2
=
5
4
1
5
÷2
=
1
10
4
5
-
7
10
=
1
10
20÷
4
9
=45,
2
3
×
3
4
÷
2
3
×
3
4
=
9
16

单项选择题
单项选择题