问题 解答题
1
20
×
2
3
=
5
6
×
2
15
=
15
17
×
17
15
=
3
4
×
1
5
=
6
11
×
1
12
=
3
22
×
11
13
=
13
15
×30=
28×
7
24
=
4
7
×
3
8
×
7
16
=
答案

1
20
×
2
3
=
1
30
5
6
×
2
15
=
1
9
15
17
×
17
15
=1,
3
4
×
1
5
=
3
20
6
11
×
1
12
=
1
22
3
22
×
11
13
=
3
26
13
15
×30=26,
28×
7
24
=8
1
6
4
7
×
3
8
×
7
16
=
3
32

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