Mark Twain’s Pre-Algebra resource book for fifth to twelfth grades focuses on these concepts: -number systems -variables -exponents -radicals -equations -stat
The 100+ Series, Pre-Algebra, offers in-depth practice and review for challenging middle school math topics such as ratios and proportions; rational numbers; an
Kelley Wingate's Pre-Algebra helps students in grades 5-8 master the pre-algebra skills necessary to succeed. Aligned to the Common Core State Standards, practi