Hi daniel.cautis,
Since you scored a 450 on your recent practice exam, you will need to increase both your quant and verbal knowledge to hit your 600+ score goal. To help build up your knowledge, rather than seeking out ways to ”beat the system,” you may consider following a study routine that allows for linear and targeted learning and follow that with focused, deliberate practice.
For example, if you are learning about Number Properties, you should learn everything possible about that topic: LCM, GCF, units digit patterns, divisibility, remainders, etc. After that, be sure that you practice with a lot of questions (50 or more) just on Number Properties. By doing such thorough practice, you’re developing your ability to apply what you have learned to realistic GMAT practice questions. The more realistic practice problems you solve using proper strategies and techniques, the stronger and faster you’ll become. It is through this deliberate practice that you will continue to build sophisticated critical thinking, analytical reasoning, and decision making skills - all skills that the GMAT rewards and which many students lack.
Follow a similar routine for verbal by learning one section at a time: reading comprehension, sentence correction, or critical reasoning. When learning about critical reasoning, for example, you want to be able to learn about all aspects of critical reasoning: strengthen and weaken the conclusion, resolve the paradox, find the conclusion, must be true, etc. Follow up your learning with focused critical reasoning practice, so you can determine your specific weaknesses within that topic. You should do the same for sentence correction and reading comprehension.
If your current resources do not allow for such focused learning and deliberate practice, you may consider using a robust resource, such as a self-study course.
Once you feel you have provided your GMAT quant and verbal knowledge, begin taking practice exams to track your overall progress. When taking practice exams you may consider taking the exams offered by GMAC, since those exams have an accurate scoring algorithm and contain retired questions from past GMAT exams.
Please keep us updated with your prep and, if you have any further questions, feel free to reach out to me directly.
Good luck!