问题 解答题
计算下面各题.
3
13
×
26
37
18
21
×
7
9
23
24
×
8
69
答案

3
13
×
26
37

=

=

6
37

18
21
×
7
9

=

=

2
3

23
24
×
8
69

=

=

1
9

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