This book can be used by 6th to 10th grade students preparing for AMC 10. Each chapter consists of (1) basic skill and knowledge section with examples, (2) plenty of exercise problems, and (3) detailed solutions to all problems.
Volume 2:
http: //www.amazon.com/American-Mathematics-Competitions-AMC-Preparation/dp/1519207743/
Volume 3
http: //www.amazon.com/American-Mathematics-Competitions-AMC-Preparation/dp/1519207778
Volume 4
http: //www.amazon.com/American-Mathematics-Competitions-AMC-Preparation/dp/152271958X
Volume 5
http: //www.amazon.com/American-Mathematics-Competitions-AMC-Preparation/dp/1522719776