This book is designed to help you master the quantitative reasoning sections of the New York City Specialized High School Admissions Test (SHSAT) and Thomas Jefferson High School for Science and Technology (TJHSST) Admissions Test. The book contains 13 lessons with topic-specific summaries and 10 problems relevant to each lesson. Along with the topic-specific lessons, there are 8 full-length practice tests with detailed solutions and explanations.