问题 解答题
直接写出得数.
4
5
÷5
=
8
9
÷
9
8
=
7
9
×
3
4
=
3
4
-
1
2
=
1
2
+
1
2
=
3
8
=
5
8
×
1
5
=
1
3
+
1
6
=
1
3
=
(
1
8
+
1
4
)×4
=
答案

直接写出得数.

4
5
÷5=
4
25
8
9
÷
9
8
=
64
81
7
9
×
3
4
=
7
12
3
4
-
1
2
=
1
4
1
2
+
1
2
=
1
2
3
8
=
40
3
5
8
×
1
5
=
1
8
1
3
+
1
6
=
1
2
1
3
=2
(
1
8
+
1
4
)×4
=1
1
2

单项选择题
单项选择题