问题 解答题
计算
75×
3
15
9
52
×13
8
5
×
5
24
4
13
×
3
8
7
52
×
13
28
2
3
÷
4
15
3
5
×
1
12
9
66
×
11
27
11
13
÷
22
39
5
24
×
4
15
7
20
÷
3
5
7
20
÷
8
15
6
7
÷
3
14
 
6
25
÷
3
10
 
9
22
÷21.
答案

75×
3
15
=15,
9
52
×13=
9
4
8
5
×
5
24
=
1
3
4
13
×
3
8
=
3
26
7
52
×
13
28
=
1
16
2
3
÷
4
15
=
5
2
3
5
×
1
12
=
1
20
9
66
×
11
27
=
1
18
11
13
÷
22
39
=
3
2
5
24
×
4
15
=
1
18
7
20
÷
3
5
=
7
12
7
20
÷
8
15
=
21
32
6
7
÷
3
14
=4,
6
25
÷
3
10
=
4
5
9
22
÷21=
3
154

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