Results 1 to 4 of 4
Like Tree1Thanks
  • 1 Post By MacstersUndead

Math Help - Need assistance on algebra word problem

  1. #1
    Junior Member
    Joined
    Feb 2013
    From
    Chicago
    Posts
    25

    Need assistance on algebra word problem

    solve the multiplication problem 23*27 by writing equations that use expanded forms and the distributed property. relate the equation to the steps in partial-products algorithm for calculating 23*27. Use this to explain why the partial-products algorithm calculates the correct answer to 23*27.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Forum Admin topsquark's Avatar
    Joined
    Jan 2006
    From
    Wellsville, NY
    Posts
    10,211
    Thanks
    419
    Awards
    1

    Re: Need assistance on algebra word problem

    Quote Originally Posted by green11 View Post
    solve the multiplication problem 23*27 by writing equations that use expanded forms and the distributed property. relate the equation to the steps in partial-products algorithm for calculating 23*27. Use this to explain why the partial-products algorithm calculates the correct answer to 23*27.
    What is a "partial-products algorithm?" Do you perhaps mean something like this: (20 + 3)(20 + 7)?

    -Dan
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Feb 2013
    From
    Chicago
    Posts
    25

    Re: Need assistance on algebra word problem

    no, something like this
    partial produce algorithm example

    Original problem
    764
    x58
    ------

    764
    x58
    -------
    32-8*4
    480-8*60
    5,600-8*700
    200-50*4
    3,000-*50*60
    35,000-50*700
    44,312(total after adding the amounts, 32+480...)
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Senior Member MacstersUndead's Avatar
    Joined
    Jan 2009
    Posts
    291
    Thanks
    32

    Re: Need assistance on algebra word problem

    Dan's interpretation of your problem is correct.

    We can consider the product of (764)x(58) as (700 + 60 + 4) x (50 + 8) = (8+50) x (4 + 60 + 700) by commutativity of addition and multiplication
    (8+50) x (4+60+700) using foil method / distributive property is 8*4 + 8+60 + 8*700 + 50*4 + 50*60 + 50*700

    For 23 x 27 it's exactly the same process and you start with the form Dan outlined for you already.
    Thanks from topsquark
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Need assistance on an algebra word problem
    Posted in the Algebra Forum
    Replies: 3
    Last Post: March 1st 2013, 09:00 AM
  2. Word problem assistance needed
    Posted in the New Users Forum
    Replies: 3
    Last Post: September 12th 2012, 02:16 AM
  3. Algebra Roadblock, quick assistance needed!
    Posted in the Algebra Forum
    Replies: 2
    Last Post: November 10th 2009, 03:54 PM
  4. Replies: 3
    Last Post: March 19th 2009, 06:04 AM
  5. Word Problem - Need Assistance
    Posted in the Math Topics Forum
    Replies: 3
    Last Post: March 12th 2009, 01:00 PM

Search Tags


/mathhelpforum @mathhelpforum