问题
解答题
(2010-201×1)+(2010-201×3)+(2010-201×5)+…+(2010-201×19)=______.
答案
(1)(2010-201×1)+(2010-201×3)+(2010-201×5)+…+(2010-201×19)
=201×(10-1)+201×(10-3)+201×(10-5)+…+201×(10-19)
=201×9+201×7+201×5++…+201×(-9)
=201×(9+7+5+…+1-1-2-…-9)
=201×0
=0
故答案为:0.