Math Mammoth Grade 5-A worktext (Light Blue Series) is the first part of a complete math curriculum for fifth grade, aligned to the Common Core Standards. This is the 2020 edition of the book. The first chapter covers operations with whole numbers (e.g. multi-digit multiplication and long division with two-digit divisors). We also study divisibility, factors, and prime factorization. In chapter 2, the focus is on large numbers and using a calculator. Then we study simple equations and problem solving, using a pan balance and bar models. Chapter 4 is about decimals and some operations with decimals. We focus on place value, addition & subtraction of decimals, and multiplication & division of decimals by whole numbers. Please note this book is spiral (coil) bound. For the second half of 5th grade math, check out Math Mammoth Grade 5-B worktext (available separately at Lulu). Also available for grade 5 are the answer keys and a book containing cumulative reviews and chapter tests.