问题 解答题
直接写得数.
2
5
×6=
30×
5
6
=
2
13
÷
2
5
=
20÷
4
5
=
1
2
+
1
5
=
7
9
×
5
8
×0=
1
7
×
2
3
=
2
3
×
3
10
=
5
8
-50%=
18
6
7
÷6=
答案

2
5
×6=
12
5
; 30×
5
6
=25;
2
13
÷
2
5
=
5
13
;20÷
4
5
=25;
1
2
+
1
5
=
7
10

7
9
×
5
8
×0=0;
1
7
×
2
3
=
2
21
; 1÷
2
3
×
3
10
=
9
20
5
8
-50%=0.375;18
6
7
÷6=3
1
7

单项选择题
单项选择题