How to improve Math score on GMAT?

Answer :Must have and recommended book is: The Official Guide for GMAT Review, 12th Edition(Author: Graduate Management Admission Council). As a supplement you should also read - Kaplan GMAT, GMAT Prep Course by Jeff Kolby. If \'verbal writing\' is your weak are or you wish to improve your scores here, the suggested books are \'Sentence Correction GMAT Preparation Guide?\'Word Translations Gmat Preparation Guide\' and \'Critical Reasoning & Reading Comprehension GMAT Preparation Guide\'(all authored by: Manhattan GMAT Prep),\'Verbal Workout for the GMAT, 2nd Edition\' (Author:Author: Doug French)