You've worked through basic guides and you've taken the practice tests-now take your GMAT score to the next level. Build your higher-level quantitative skills with Manhattan GMAT's Advanced Quant supplement, specially designed for students seeking 650+ scores. This guide combines intense practice with techniques for problem solving and data sufficiency questions, ranging from broad principles to tactics for narrowing down possible answers. You'll also receive 6 online practice exams-fully computer adaptive-free with your purchase.