Hi lizlizliz,

These days, the 80th percentile is right around a Quant Scaled Score of 49. To score at THAT level, you have to eliminate almost all of your silly mistakes, be very strong at Data Sufficiency and have proper pacing skills (so that you're not guessing on a bunch of questions at the end of the section).

One month is probably not enough time for you to make the necessary changes to how you approach the Quant section and score a Q49. You CAN make some changes to pick up some points though. Take a good look at the questions you're getting wrong, identify the errors/mistakes and try to fix those specific problems. Take a good look at how you're organizing your work and how quickly you start working and you might be able to improve your speed (and by extension, your pacing).

GMAT assassins aren't born, they're made,
Rich

To improve your quantitative score, I believe that you should compartmentalize your learning and take the time to master each topic (e.g., percents, ratios, exponents, statistics, etc.). This means that, for each topic, you should:
1) Learn the underlying concepts (rules, attributes, notation, etc.)
2) Learn GMAT-specific strategies related to that topic
3) Practice dozens of questions all related to that one topic.
4) Don't stop working on that topic until you have mastered it
Then, and only then, move on to the next topic.

To help you focus on one topic at a time, you can use BTG's tagging feature. For example, here are all of the questions tagged as statistics questions: https://www.beatthegmat.com/forums/tags/ ... statistics
See the left side of that linked page for more tag options.

I also suggest that you spend a lot of time reviewing the responses from the Experts on this site. They model the steps one should take when tackling math problems.

Finally, in addition to learning the core concepts and GMAT-specific strategies, be sure to work on your endurance and test-taking skills (e.g., time management) by taking several practice tests.

Cheers,
Brent