问题 解答题
直接写出得数.
7
25
=______;
4
7
×
3
4
=______;
4
5
×20
=______;
2
3
=______;
3
8
×
2
3
=______;
5
4
=______;
5
9
×
2
15
=______;
1
3
-
1
4
=______.
答案

7
25
=
7
5
4
7
×
3
4
=
3
7
4
5
×20
=16;
2
3
=0;
3
8
×
2
3
=
1
4
5
4
=
15
2
5
9
×
2
15
=
2
27
1
3
-
1
4
=
1
12

单项选择题
单项选择题