分数加减法数学题, 求过程 ,速度.1个小时以内
|1/3-1/2|+|1/4-1/3|+|1/5-1/4|……|1/2004-1/2003|
注：|***|旁边的两根杠表示绝对值
人气：446 ℃ 时间：2020-03-26 14:47:17
解答
|1/3-1/2|+|1/4-1/3|+|1/5-1/4|……|1/2004-1/2003|
=1/2-1/3+1/3-1/4+1/4-1/5+……+1/2003-1/2004
=1/2-1/2004
=1001/2004
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