“e度”教育社区 » 育才学校 » [分享]东北育才学校五年级数学竞赛题

wzs 发表于 2007-7-21 17:23

[分享]东北育才学校五年级数学竞赛题

<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; mso-list: l0 level2 lfo1; tab-stops: list 39.0pt"><SPAN lang=EN-US style="mso-fareast-font-family: &#39;Times New Roman&#39;"><SPAN style="mso-list: Ignore"><SPAN style="FONT: 7pt &#39;Times New Roman&#39;">&nbsp;</SPAN></SPAN></SPAN><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">把自然数按由小到大的顺序排列起来</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">组成一串数</SPAN><SPAN lang=EN-US>:1,2,3,4,…9,10,11,12,…</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">把这串数中的两位及两位以上的数全部隔开成一位数字</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">组成第二串数</SPAN><SPAN lang=EN-US>:</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; mso-list: l0 level2 lfo1; tab-stops: list 39.0pt"><FONT size=3><SPAN lang=EN-US>1,2,3,4,…1,0,1,1,1,2,1,3…</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 21pt; TEXT-INDENT: 10.5pt; mso-para-margin-left: 2.0gd; mso-char-indent-count: 1.0"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">那么第一串数中的</SPAN><SPAN lang=EN-US>105</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">的个位数</SPAN><SPAN lang=EN-US>5</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">是第二串数中的第</SPAN><SPAN lang=EN-US>____</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">个数</SPAN><SPAN lang=EN-US>.</SPAN></FONT></P>

匿名 发表于 2007-7-22 15:36

1×9+2×90+3×6＝207

800aaa 发表于 2008-7-13 06:18

俺也是这么算的，哈哈哈:lol

匿名 发表于 2008-10-5 22:20

十一假期结束,新的学习又开始了.

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