计算:2512008×2009+2512009×2010=______.-数学

题目简介

计算:2512008×2009+2512009×2010=______.-数学

题目详情

计算:
251
2008×2009
+
251
2009×2010
=______.
题型:填空题难度:中档来源:不详

答案

class="stub"258
2008×2009
+class="stub"258
2009×2080

=258×(class="stub"8
2008×2009
+class="stub"8
2009×2080
),
=258×(class="stub"8
2008
-class="stub"8
2009
+class="stub"8
2009
-class="stub"8
2080
),
=258×class="stub"2
2008×2080

=class="stub"8
8040

故答案为:class="stub"8
8040

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