问题 解答题
你能利用商不变的性质很快算出下面各题的商吗?
6300÷7008100÷9003000÷125
4800÷2538700÷9008000÷1600.
答案

①6300÷700,

=(6300÷100)÷(700÷100),

=63÷7,

=9;

②8100÷900,

=(8100÷100)÷(900÷100),

=81÷9,

=9;

③3000÷125,

=(3000×8)÷(125×8),

=24000÷1000,

=24;

④4800÷25,

=(4800×4)÷(25×4),

=19200÷100,

=192;

⑤38700÷900,

=(38700÷100)÷(900÷100),

=387÷9,

=43;

⑥8000÷1600,

=(8000÷100)÷(1600÷100),

=80÷16,

=5.

单项选择题 案例分析题
单项选择题