问题 解答题
计算.
12
7
×
14
15
7
15
÷
21
40
1
4
÷
2
5
3
4
×
35
8
×
4
7
3
7
÷6×
8
7
7
6
÷7÷
5
9
答案

12
7
×
14
15
=
8
5
7
15
÷
21
40
=
8
9
1
4
÷
2
5
=
5
8
3
4
×
35
8
×
4
7
=
15
8
3
7
÷6×
8
7
=
4
49
7
6
÷7÷
5
9
=
3
10
故答案为:
8
5
8
9
5
8
15
8
4
49
3
10

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