On the Digital SAT, you?ll encounter adaptive modules that either increase or decrease in difficulty depending on your performance.This book helps you become familiar with the content of each math difficulty tier and get ahead of the game! Inside you?ll find: ? The experience you need to level up your math skills ? 36 drills to help you find and surpass your current difficulty level for each subject area ? Walk-throughs of every question so you know the best way to tackle each problem ? Progress assessments to set clear goals with which to continue your studies