American Mathematics Competitions (AMC 8) Preparation (Volume 6): Practice Tests, Paperback
Yongcheng Chen
American Mathematics Competitions (AMC 10) Preparation Practice Tests, Paperback
Balls and Boxes, Paperback/Yongcheng Chen
Problem Solving Using Auxiliary Lines, Paperback/Yongcheng Chen
Mathcounts Speed and Accuracy Practice Tests, Paperback/Yongcheng Chen
Problem Solving Using Vieta's Theorem, Paperback/Yongcheng Chen
Problem Solving Using the Discriminant, Paperback/Yongcheng Chen
Mathcounts National Competition Solutions, Paperback/Yongcheng Chen
Competition Math for Elementary School Volume 3, Paperback/Yongcheng Chen
American Invitational Mathematics Examination (Aime) Preparation (Volume 1), Paperback/Yongcheng Chen
