问题 解答题
直接写出得数.
3
4
×40=
3
2
÷
1
2
=
25×
3
5
=
7
9
×
3
7
=
14
15
÷7
=
4
9
÷
2
3
=
1-50%=
1
3
÷
2
7
=
5
6
×
3
10
=
6
7
×
2
3
=
答案

3
4
×40
=30;

3
2
÷
1
2
=3;

25×

3
5
=15;

7
9
×
3
7
=
1
3

14
15
÷7=
2
15

4
9
÷
2
3
=
2
3

1-50%=50%;

1
3
÷
2
7
=
7
6

5
6
×
3
10
=
1
4

6
7
×
2
3
=
12
21

单项选择题 A1/A2型题
单项选择题 A1/A2型题