Results 1 to 3 of 3

Math Help - how to in scientific notation

  1. #1
    Newbie
    Joined
    Jan 2007
    Posts
    14

    Exclamation how to in scientific notation

    how do u do this i dont understand



    how do u write that in scientific notation?
    8 billion



    0.00003125 in scientific notation?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by diamond1 View Post
    how do u do this i dont understand



    how do u write that in scientific notation?
    8 billion



    0.00003125 in scientific notation?
    Scientific notation is when you express a number in the form:

    a.*** x 10^n

    where a is an integer between 1 and 9 inclusive, .*** means some decimal expansion, the number of decimals may vary based on how many significant figures you want, and "x 10^n", is read "times 10 to the n" and n is some integer that tells you how many times to move the decimal point to the right or left to get the actual number. If n is negative, we move the decimal point to the left, if it is positive, we move it to the right. So here goes.

    8 billion = 8,000,000,000 = 8.0 x 10^9

    this means we take the number 8.0 and move the decimal point 9 places to the right to get 8 000 000 000, which is 8 billion


    0.00003125 = 3.125 x 10^-5
    this means we take the number 3.125 and move the decimal point 5 places to the left to get the number 0.00003125

    Understand? if anything is unclear, please say so
    Last edited by Jhevon; March 4th 2007 at 06:09 PM.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Global Moderator

    Joined
    Nov 2005
    From
    New York City
    Posts
    10,616
    Thanks
    10
    Quote Originally Posted by diamond1 View Post
    how do u write that in scientific notation?
    8 billion
    8 billion = 8,000,000,000 = 8 X 10^9


    0.00003125 in scientific notation?
    3.125 X 10^{-5}
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Scientific notation
    Posted in the Algebra Forum
    Replies: 27
    Last Post: September 6th 2010, 11:51 PM
  2. scientific notation
    Posted in the Calculators Forum
    Replies: 0
    Last Post: September 23rd 2009, 02:40 PM
  3. scientific notation
    Posted in the Algebra Forum
    Replies: 2
    Last Post: May 23rd 2008, 06:54 AM
  4. Scientific Notation
    Posted in the Algebra Forum
    Replies: 13
    Last Post: April 1st 2007, 11:59 AM
  5. Scientific notation
    Posted in the Algebra Forum
    Replies: 1
    Last Post: December 28th 2006, 10:24 PM

Search Tags


/mathhelpforum @mathhelpforum