document.write( "Question 673325: What is 23998 rounded to 3 significant digits and what is the rule for numbers like it? \n" ); document.write( "
Algebra.Com's Answer #418684 by Edwin McCravy(20061)\"\" \"About 
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document.write( "23998\r\n" );
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document.write( "First put it in scientific notation\r\n" );
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document.write( "2.3998 × 104\r\n" );
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document.write( "Draw a line after the 3rd digit from the left\r\n" );
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document.write( "2.39⃒98 × 104\r\n" );
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document.write( "Since the digit just to the right of the ⃒ which is a 9,\r\n" );
document.write( "is 5 or more we add 1 to the 9 just to the left of the ⃒ \r\n" );
document.write( "and since it becomes 10 we have to carry a 1 to the 3 making \r\n" );
document.write( "it 2.40. Eliminate the digits to the right of the ⃒. \r\n" );
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document.write( "2.40 × 104\r\n" );
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document.write( "Important: Do not eliminate the 0 on the end of 2.40.  It is\r\n" );
document.write( "nexessary to show the number of significant digits.\r\n" );
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document.write( "Answer: 2.40 × 104 \r\n" );
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document.write( "Edwin
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