10-31-2012, 03:38 PM
Practice! Math is all about practicing. You're on the right track with those practice tests but you are not scoring particularly high--so I would take the the areas in which you are not scoring highly and try to find practice problems--which I think Khan may have at this point. Just work it hard. You're moving on to some pretty tough math so the more relevant practice you can find, the better. Good luck!
Michael
Michael