问题 解答题
下面各题写出必要的计算过程.
3
4
×
5
6
=
16×
3
8
=
3
8
×
4
7
=
3
5
×1100=
答案

3
4
×
5
6

=

3×5
4×6

=

5
8

16×

3
8

=

16×3
8

=6;

3
8
×
4
7

=

3×4
8×7

=

3
14

3
5
×1100,

3×1100
5

=660.

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