Results 1 to 2 of 2

Math Help - Writing the answer in scientific notation

  1. #1
    Newbie
    Joined
    Oct 2008
    Posts
    3

    Writing the answer in scientific notation

    My daughter is in seventh grade prealgebra and she is having a really hard time. For homework one of her questions is

    36x10 to the seventh power divided by

    12x10 to the negative 3rd power

    so far we have come up with 360,000,000 divided by .012

    I am trying to help her but I do not know how to explain the rest.

    Could someone please help me out. If you can write out the next steps I will walk her through the solving process.

    Thank you ahead of time for any help.
    Last edited by jmotherx3; October 16th 2008 at 06:26 PM. Reason: I am still looking for someone to show the work so I can understandit better.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member
    Joined
    Mar 2008
    Posts
    78
    It is easier if you evaluate the expression as a whole instead of finding the number in the numerator and then the number in the denominator.

    When you're dividing, you subtract the power of 10 in the numerator by the power of 10 in the denominator, so for your example it is

    7 - (-3) = 10

    Then you have 36/12 = 3

    And the answer is 3 * 10^10

    I'm not familiar with math code like many helpers on this forum, so maybe someone else can write it more clearly if you can't understand what I mean.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Scientific Notation
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: August 12th 2010, 10:12 AM
  2. Scientific Notation
    Posted in the Math Topics Forum
    Replies: 4
    Last Post: December 1st 2009, 07:06 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: 1
    Last Post: July 26th 2007, 02:05 PM
  5. Scientific Notation
    Posted in the Algebra Forum
    Replies: 13
    Last Post: April 1st 2007, 11:59 AM

Search Tags


/mathhelpforum @mathhelpforum