document.write( "Question 392827: express 0.00000068 in scientific notation \n" ); document.write( "

Algebra.Com's Answer #279043 by jsmallt9(3758) $\"\"$ $\"About$

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A number in scientific notation is of the form:
\n" ); document.write( "a x $\"10%5En\"$
\n" ); document.write( "where
\n" ); document.write( " $\"1+%3C=+a+%3C+10\"$ and n is an integer.
\n" ); document.write( "Note 1: The \"a\" can be equal to 1. But it cannot be 10.
\n" ); document.write( "Note 2: The \"x\" is a multiplication sign. Scientific notation often uses the old-fashioned \"x\" for multiplication.

\n" ); document.write( "To change a number into scientific notation:

Write the number in decimal form. If the number is a fraction, divide it. If the number is an integer, put a decimal at the end.
Move the decimal so that is is between the leftmost non-zero digit and the digit to its right. This new number will be the \"a\".
The number of places you moved the decimal point will be $\"abs%28n%29\"$ . If you moved the decimal to the left, n will be positive and if you moved the decimal to the right then the exponent will be negative.

\n" ); document.write( "Let's try this on your number:
\n" ); document.write( "1) Write with a decimal. Your number is already in decimal form.
\n" ); document.write( "2) Move the decimal. The leftmost non-zero digit is the 6. So we move the decimal between the 6 and the digit to its right, the 8:
\n" ); document.write( "6.8
\n" ); document.write( "This is the \"a\"
\n" ); document.write( "3) We moved the decimal point to the right above so the exponent, n, will be negative. And we moved it 7 places so the exponent is -7

\n" ); document.write( "So 0.00000068, in scientific notation is 6.8 x $\"10%5E%28-7%29\"$ . \n" ); document.write( "

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