Hello, guy I should pay no attention to
Congratulations on your existing improvement!
One product you might want to look for is the GMAT Quantitative Focus. Have you seen it? The only reason I ask is that it's fairly new. If you have, skip ahead to the ***. GMAT Quant Focus is an online test you can take that supposedly gauges your individual strengths and weaknesses, and tells you where to focus your study, subject matter wise. One nice advantage is that, unlike with the CATs, answer explanations are provided. Each time you take the test, it's $25, but if you buy 3 at a time, it's $65.
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Here's a question for you; what is your overall approach? Is it the old school classical approach or have you learned some of the powerful techniques and shortcuts that are out there?
I got a quite strong test score the first time I took it (710), but it still wasn't quite where I wanted it to be. Oddly enough, the biggest handicap I had was the fact that I had been a math major in college. Therefore, by God, I could solve some equations. Work things out the long way. If there's anyone who could do that, it should be me.
Eventually, I learned that it's much better, whenever the problem permits, to just take the answer choices, ask yourself "is this it?" and confirm. For example, do you have the new 12th edition burgundy book? If so, question #13 in the PS section does a beautiful job of demonstrating this idea. Another good hint here is to first check answer choice D, and then answer choice B. As a math major, I didn't like this idea; it offended me! And yet, I can't argue the results of this paradigm switch (760).
I don't want to preach to the choir, so if you already know all this, then I'll leave it at that.
However, if you'd like me to go on, I gladly would. Know this: doing things the same way will get you the same results.
Good luck with everything!