Results 1 to 5 of 5
Like Tree2Thanks
  • 1 Post By MacstersUndead
  • 1 Post By Plato

Thread: [Int. Algebra] How can I improve my equation calculation speed?

  1. #1
    Newbie
    Joined
    Oct 2017
    From
    San Diego, Ca
    Posts
    19

    [Int. Algebra] How can I improve my equation calculation speed?

    I feel that I'm taking too long to do simple Algebra I/II equations.

    Example: $\displaystyle 3(2x-2)-4(x+6)=3x+8+x$

    This equation took me a little under 3 minutes and this one was easy. I need to figure this because I run out time during tests. This invariable makes me panic and essentially my brain shuts down--I'm done. I practice equations and anything that I need help with for about two to three hours a day. Someone told me that I'm spending too much time studying, I don't see how it's possible to study too much.

    Moving on... any tips or opinions on how I can speed up my solving process would be appreciated.

    Thanks
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Senior Member
    Joined
    Jan 2009
    Posts
    386
    Thanks
    61

    Re: [Int. Algebra] How can I improve my equation calculation speed?

    Quote Originally Posted by alexcordero View Post
    Example: $\displaystyle 3(2x-2)-4(x+6)$
    Grouping. Group coefficients of x, then group constants. The reason for this is that once you know you've solved the coefficient of x, you no longer need to worry about adding x terms for solving the rest.
    $\displaystyle 3(2x-2)-4(x+6) = (6 - 4)x + (-6 - 24) = 2x - 30$

    With practice, the middle step can be done in your head.
    Thanks from alexcordero
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Oct 2017
    From
    San Diego, Ca
    Posts
    19

    Re: [Int. Algebra] How can I improve my equation calculation speed?

    Quote Originally Posted by MacstersUndead View Post
    Grouping. Group coefficients of x, then group constants. The reason for this is that once you know you've solved the coefficient of x, you no longer need to worry about adding x terms for solving the rest.
    $\displaystyle 3(2x-2)-4(x+6) = (6 - 4)x + (-6 - 24) = 2x - 30$
    Oh wow! I did do this particular problem in my head. It still took me a bit but I didn't write anything down. Ok.. This is the sort of information I was hoping for. Thank you VERY much.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor

    Joined
    Aug 2006
    Posts
    21,966
    Thanks
    2921
    Awards
    1

    Re: [Int. Algebra] How can I improve my equation calculation speed?

    Quote Originally Posted by alexcordero View Post
    It still took me a bit but I didn't write anything down. Ok.. This is the sort of information I was hoping for. Thank you VERY much.
    $\displaystyle 3(2x-2)-4(x+6)=3x+8+x$

    It seems to me that instead of copying the problem it would smart to just start.

    $\displaystyle \begin{array}{l} 6x - 6 - 4x - 24 = 4x + 8\\ 2x - 30 = 4x + 8\\ - 2x = 38 \end{array}$
    Thanks from alexcordero
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Newbie
    Joined
    Oct 2017
    From
    San Diego, Ca
    Posts
    19

    Re: [Int. Algebra] How can I improve my equation calculation speed?

    This is also very helpful in addition to grouping. Particularly because one of the processes that took longer than expected during an exam was rewriting the equation and checking to see that I did that right. Because I was already nervous, there was one equation that I wrote down incorrectly and tried to solve--that was a good 10 minute waste of time.

    Our professor has an unusual way of giving tests. He gives you the questions and you're not allowed to write on that. Then he gives you a separate sheet of paper and you're to copy the problem and solve it. You turn in the questions with your name and the answer sheet. I've never seen math tests administered like this but it adds a strange complications.

    Anyway, it is what it is.. thanks for your help.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Matrix calculation/algebra!
    Posted in the Advanced Algebra Forum
    Replies: 2
    Last Post: Apr 16th 2010, 01:59 AM
  2. Replies: 6
    Last Post: Apr 10th 2010, 04:26 AM
  3. Algebra - Speed, Distance Word Problem
    Posted in the Algebra Forum
    Replies: 2
    Last Post: Apr 9th 2010, 07:04 AM
  4. speed calculation
    Posted in the Calculus Forum
    Replies: 1
    Last Post: Jun 10th 2009, 09:21 PM
  5. Algebra speed problem
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: May 20th 2008, 04:38 PM

/mathhelpforum @mathhelpforum