问题
填空题
计算：（m+3m+5m+…+2009m）-（2m+4m+6m+…+2008m）=______．
答案
（m+3m+5m+…+2009m）-（2m+4m+6m+…+2008m）=m+（3m-2m）+（5m-4m）…+（2009m-2008m）=1005m．
搜题请搜索小程序“爱下问搜题”
计算：（m+3m+5m+…+2009m）-（2m+4m+6m+…+2008m）=______．
（m+3m+5m+…+2009m）-（2m+4m+6m+…+2008m）=m+（3m-2m）+（5m-4m）…+（2009m-2008m）=1005m．
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