问题 解答题
直接写得数.
3
4
=
10÷
2
5
=
5
7
=
4
5
÷6=
8
15
×
5
6
=
8
9
÷
19
21
×0=
1-
1
4
-
1
3
=
6
7
÷
3
7
×
2
7
=
答案

3
4
=
9
2
10÷
2
5
=25,
5
7
=
7
5
4
5
÷6=
2
15
8
15
×
5
6
=
4
9
8
9
÷
19
21
×0=0,
1-
1
4
-
1
3
=
5
12
6
7
÷
3
7
×
2
7
=
4
7

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