This book, with over 250 problems, covers the following topics: Number Theory / System, Addition / Subtraction, Multiplication / Division, Fractions / Decimals, Patterns, Geometry, Algebra, Metric System, and more If you are home schooling (or if you are just trying to get extra practice for your child), then you already know that math workbooks and curriculum can be expensive. Home School Brew is trying to change that We have teamed with teachers and parents to create books for prices parents can afford. We believe education shouldn't be expensive. The problem portion of the book may also be purchased individually in "Fourth Grade Math Problems."