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(10000-1000-1000-10)/10用巧算有几种算法
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(10000-1000-1000-10)/10用巧算有几种算法
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答案和解析
(10000-1000-1000-10)/10
=10000/10 -1000/10 -1000/10 -10/10
=1000-100-100-1
=799
(10000-1000-1000-10)/10
=7990/10
=799
=10000/10 -1000/10 -1000/10 -10/10
=1000-100-100-1
=799
(10000-1000-1000-10)/10
=7990/10
=799
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