3+57536+914-192008÷20072009.-数学

题目简介

3+57536+914-192008÷20072009.-数学

题目详情

3+
5
7
5
36
+
9
1
4
-
1
9

2008÷
2007
2009
题型:解答题难度:中档来源:不详

答案

(1)3+class="stub"5
class="stub"7
class="stub"5
36
+class="stub"9
class="stub"1
4
-class="stub"1
9

=3+class="stub"5
class="stub"7
class="stub"5
36
+class="stub"9
class="stub"5
36

=3+class="stub"5
class="stub"16
class="stub"5
36

=3+class="stub"5
16×class="stub"36
5

=3+class="stub"5
class="stub"576
5

=3+class="stub"25
576

=3class="stub"25
576


(2)2008÷class="stub"2007
2009

=2008×class="stub"2009
2007

=(2007+1)×class="stub"2009
2007

=2007×class="stub"2009
2007
+class="stub"2009
2007

=2009+1class="stub"2
2007

=2010class="stub"2
2007

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