Top 10 GED Math Prep Books to buy! (2022 Picks) 7- GED Math Exercise Book: Student Workbook and Two Realistic GED Math Tests. The GED Math Exercise book helps prepare test takers for the GED Math Exam. This book is a valuable learning tool for test-takers who need extra practice in math to improve their GED Math score. This workbook acts as your ticket to get a higher GED Math score.