document.write( "Question 664359: what is the estimated product 86 and 721 ?
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Algebra.Com's Answer #413267 by ReadingBoosters(3246)\"\" \"About 
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Round 86 to 90
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\n" ); document.write( "7*9 is 63
\n" ); document.write( "Estimate 86*721 as 63,000
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\n" ); document.write( "Round 86 to 90
\n" ); document.write( "Round 721 to 720
\n" ); document.write( "72*9 = 648
\n" ); document.write( "Estimate 86*721 as 64,800
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\n" ); document.write( "-Reading Boosters
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