问题 解答题
口算速算.
3
14
=
2
3
÷2
=
1-
2
7
=
3
7
=
5
6
×12
=
1
4
-
1
6
=
8
15
×
5
6
=
5
14
÷
1
7
=
(
3
5
-
3
5
3
5
=
答案

3
14
=
3
2
2
3
÷2
=
1
3
1-
2
7
=
5
7
3
7
=14
5
6
×12
=10
1
4
-
1
6
=
1
12
8
15
×
5
6
=
4
9
5
14
÷
1
7
=
5
2
(
3
5
-
3
5
3
5
=0.

多项选择题
单项选择题