document.write( "Question 66499: perform the indicated operation. Write the result in standard decimal notation.
\n" ); document.write( "(9.8 x 10^-4)(2.1 x 10^2)(3.1 x 10^-1) \n" ); document.write( "

Algebra.Com's Answer #47235 by rcmcc(152) $\"\"$ $\"About$

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$\"%289.8x10%5E-4%29%282.1x10%5E2%29%283.1x10%5E-1%29\"$ \r
\n" ); document.write( "\n" ); document.write( "The easiest way to solve this is by converting the terms into standard form and then placing them back into notation form.
\n" ); document.write( "9.8E-4 is the same as 0.00098 as the decimal moves 4 forward
\n" ); document.write( "2.1E2 is teh same as 210 as the decimal moves 2 back
\n" ); document.write( "3.1E-1 is the same as 0.31 as the decimal moves 1 back\r
\n" ); document.write( "\n" ); document.write( "multiply these to form one term
\n" ); document.write( "0.00098x210x0.31= 0.063798 because you are only given 2 significant digits you round to the 2nd placing in this case you round it up to 0.064\r
\n" ); document.write( "\n" ); document.write( "to get the term back into standard notation move the decimal back 2 places you get the answer\r
\n" ); document.write( "\n" ); document.write( " $\"6.4x10%5E-2\"$ \n" ); document.write( "

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