问题 解答题
24×
5
6
=
7
9
×9
=
1
9
÷
1
9
=
5
16
×
8
15
=
3
4
÷
1
2
=
1
3
-
1
4
=
4
5
-
1
2
=
1
7
×5
=
3
4
=
8
9
=
3-
3
4
=
1
5
=
1
2
+
1
6
=
5
6
÷
1
6
=
5
6
÷5
=
3
4
×12
=
答案

24×
5
6
=20;
7
9
×9
=7;
1
9
÷
1
9
=1;
5
16
×
8
15
=
1
6
3
4
÷
1
2
=1.5;
1
3
-
1
4
=
1
12
4
5
-
1
2
=0.3;
1
7
×5
=
5
7
3
4
=1
1
3
8
9
=
8
9
3-
3
4
=2.25;
1
5
=25;
1
2
+
1
6
=
2
3
5
6
÷
1
6
=5;
5
6
÷5
=
1
6
3
4
×12
=9.

单项选择题
单项选择题