The Dimensions Math Workbook 3A corresponds to the 3A textbook (required and sold-separately). Exercises start with simpler problems that gradually become more challenging. A thoughtful progression pattern followed throughout the series covers the fundamental concepts, offers practice exercises with pictorial representations, and challenges students with abstract exercises. This third-grade level workbook covers numbers to 10,000, addition and subtraction, multiplication and division, and graphs and tables. Exercises align with the text, and include "basics," "practice," "check," and "challenge" questions.