=1/2009-1/2010+1/2008-1/2009+1/2007-1/2008+1/2007-1/2010 =-2/2010=-1/1005
数学题哈化简 |1/2010-1/2009|+|1//2009-1/2008|+|1/2008-1/2007|-|1/2
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相关问题
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化简：|1/2010-1/2009|+|1/2009-1/2008|+|1/2008-1/2007|-|1/2007-1
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简算:1/(2007+2008)+1/(2008+2009)+1/(2010+2011)+2011
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2008+2007x2009/2008x2009-1+2009+2008x2010/2009x2010-1+2010+2
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|1/2009-1/2008|-|1/2008-1/2007| =1/2008-1/2009-1/2007+1/2008
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1*2*3*...*2009*2010.还有：2009/2008*2008/2007*...*2/3*2/1.
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用简便方法计算1/2007*1/2008+1/2008*1/2009+1/2009*1/2010+1/2010*1/20
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2010²-2009²+2008²-2007²+……+2²-1²
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2010*2010-2009*2009+2008*2008···················+2*2-1*1
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(1/2010*1/2009*1/2008*...*1/3*1/2*1)^2011*(2010*2009*2008*..
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2008*2009-1分之2008+2007*2009+2009*1010-1分之2009+2008*2010用巧算