Math Mammoth Grade 5-B worktext (Light Blue Series) is the second part of a complete math curriculum for fifth grade. This is the 2020 edition of the book. In chapter 6 we focus on multiplying decimals by decimals, dividing decimals by decimals, and conversions between measuring units. Chapter 7 covers the addition and subtraction of fractions, and chapter 8, the multiplication and division of fractions. Chapter 9 is about geometry. Students learn to draw circles, to classify triangles and quadrilaterals, and the concept of volume in the context of right rectangular prisms. Please note this book is spiral (coil) bound. For the first half of 5th grade math, use Math Mammoth Grade 5-A worktext (available separately at Lulu). Also available are the answer keys and a book containing cumulative reviews and chapter tests.