问题 解答题
直接写出得数.
1
2
=
5
8
=
3
5
×
2
3
=
2
3
÷3=
3
8
×
2
5
=
5
7
÷
10
21
=
1
2
÷4=
5
9
÷
5
9
=
答案

1
2
=0
5
8
=0
3
5
×
2
3
=
2
5
2
3
÷3=
2
9
3
8
×
2
5
=
3
20
5
7
÷
10
21
=
3
2
1
2
÷4=
1
8
5
9
÷
5
9
=1

单项选择题
单项选择题