document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=743862>Question 743862</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do you find the sum of 7+10+13+..........+100 ???  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #453081 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=453081\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How do you find the sum of 7+10+13+..........+100 ???<BR>\n" );
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document.write( "You can add them.<BR>\n" );
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document.write( "Or, find the # of elements:<BR>\n" );
document.write( "(100 - 7)/3 = 31 --> 32 elements<BR>\n" );
document.write( "Make 16 pairs,<BR>\n" );
document.write( "7 + 100 = 107<BR>\n" );
document.write( "10 + 97 = 107<BR>\n" );
document.write( "etc<BR>\n" );
document.write( "16*107 = 1712<BR>\n" );
document.write( "Uses less paper (and time) than adding them.<BR>\n" );
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