Need some advice taking the GMAT August 2nd

[imronartest]

I took the GMAT and received a score of 420 I need a 500 to be accepted into my program. I tried using Kaplan and Princeton books and on my practice test got 450's-470's. Here is my problem this will be my last opportunity to take the test because of a deadline. Any advice or help will be appreciated. I just ordered the official guide GMAT book.

Thanks again

P.S I am performing very poorly in math which has been troubling me throughout my life.

[mayonnai5e]

Have you taken a look at the suggested books section?

https://www.beatthegmat.com/books.html

You may also want to look at our resources section for more information:

https://www.beatthegmat.com/resources.html

[bilko]

If math is a trouble area you should take a math class or two, and not just for the GMAT. B-school can be quant heavy, and you'll do a lot better if you improve your math skills before you go.