Download or read book Smart Skills Addition & Subtraction, Ages 6 - 9 written by Disney Learning and published by Smart Skills. This book was released on 2021-03-15 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Smart Skills: Addition and Subtraction activity book provides hours of engaging exercises to help young learners practice addition and subtraction within 100 alongside their favorite Marvel characters including Groot, Loki, and Spider-Man.