问题 解答题
口算.
2
9
×
3
5
=
3
8
+
1
4
=
3
50
×
5
6
=
4
5
÷
8
15
=
1
9
÷
2
3
=
1
7
×5=
5
6
÷2=
3
5
-
1
6
=
答案

2
9
×
3
5
=
2
15
3
8
+
1
4
=
5
8
3
50
×
5
6
=
1
20
4
5
÷
8
15
=
3
2
1
9
÷
2
3
=
1
6
1
7
×5=
5
7
5
6
÷2=
5
12
3
5
-
1
6
=
13
30

单项选择题
单项选择题