need your advice

<p>i took the SAT three times before
my problem that i can't improve my math score and i couldn't well prepare myself in the writing section :S CR is out of my mind in each time i score 260 :D i know it's too bad but actually i dont know how to srudy it :S because i don't have a strong vocab
i've finished CB book three times and all the previous exams from may 2005 to jan 2010 in both math and writing
additional to princeton and mcgraw hill's in math after all of that my math is 640 and my writing 480 btw my essay is 11 :D ;)
my point is i memorized most of the question :( so i'm not enhancing myself at all :'(
i need your advice from where i could prepare in writing and improve my math
please help me :(</p>