Hi,
Based on your score, it seems like your basic math is not solid enough to build your math skills rather than solving many practice questions. We would like to recommend study basic math first. In order to grasp the basic maths, reviewing 30 pages of Math Review of Official Guide is recommended. Plus, we would like to recommend our Free Video Lessons on our website. You can watch "Must-Know Basics of Math" and "Must-Know Math Formulas" to build the basic knowledge of math. Also, we recommend watching GMAT free software from
www.mba.com.
Furthermore, we are planning to add around 200 more videos in next 3 weeks to cover very basics of Math for someone who wants to start from basics like you.
If you're interested, please come visit our website and check out Free Video Lessons.
https://www.mathrevolution.com/gmat/lesson
Hope this helps.
Happy Studying!
Jin
Math Revolution