Hi. I am right now doing the Arithmetic book and I am can tell that I am really having a hard time. Can anyone make a recommendation? I just don't get the problems and feel like I need alot of practice on just basics.

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Have you worked through the Math Essentials book ("Book Zero") yet? You'll find that a lot of the more fundamental math concepts are covered in detail in that book. To a certain extent, the other quant books assume that you're comfortable with those basics and then add on complexity to make the topics more like what you'll see on the actual GMAT.