Hi Nishant760,
Here are some tips on how to best prepare for the quant section of the GRE.
My biggest piece of advice is to ensure you are studying in a topical way. In other words, focus on just ONE quant topic at a time and practice that topic until you achieve mastery. If you can study that way, I’m sure you will start seeing incremental improvement.
For example, let's say you are studying Number Properties. First, learn all you can about that topic, and then practice only Number Property questions. After each problem set, thoroughly analyze your incorrect questions. For example, if you got a remainder question wrong, ask yourself why. Did you make a careless mistake? Did you not properly apply the remainder formula? Was there a concept you did not understand in the question?
By carefully analyzing your mistakes, you will be able to fix your weaknesses efficiently and, in turn, improve your GMAT quant skills. Number Properties is just one example; follow this process for all quant topics.
For some more tips on the best way to structure your studying, here is a great article to check out:
How to Increase Your GRE Quant Score