问题 解答题
计算:
42×
9
28
=
9
44
×11=
23
24
×
8
69
=
15
16
×
20
21
×
1
5
=
9
10
×
2
3
×
5
6
=
5
4
×
1
8
×16=
答案

42×
9
28
=13
1
2
9
44
×11=2
1
4
23
24
×
8
69
=
1
9
15
16
×
20
21
×
1
5
=
5
28
9
10
×
2
3
×
5
6
=
1
2
5
4
×
1
8
×16=2
1
2

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