Adult Ed Number System, Number Sense, and Operations This adult education math book is designed to help learners prepare for CASAS, TABE 11 & 12, HiSET, and GED exams. The book utilizes Singapore math reasoning methods and follows specific standards to help adult education programs and their learners understand core math concepts that meet the Workforce Innovation and Opportunity Act (WIOA) expectations. For easy learning and teaching, the book is divided into six (6) main chapters that cover the following The chapters include mathematical thinking, reasoning, key concepts, and terminology. Each chapter is divided into several sections. To summarize, this resource allows math instructors to guide and provide learners with concise explanations, step-by-step instructions, and sufficient practice to master math concepts.