McGraw Hill-Contemporary offers one of the most popular GED preparation books series. McGraw Hill offers FREE online supplements for this series that matches the books chapter-by-chapter.
Each book has a website with a Student Center (practice tests, chapter overviews, flashcards) and an Instructor Center (web links, teaching tips, correlations to the GED test):
You can find the books at Amazon.com for as little as $10-20. If you are looking for extra practice problems in just one subject, they also offer exercise books for $1-10. Get a used book marked “like new” or “very good” condition so you can write all over it!
Don’t forget your Casio fx-260 calculator! It’s the official calculator used for the GED test.
Purchase GED Complete
Purchase GED Science OR the Science Exercise Book
Purchase GED Math OR the Math Exercise Book
Purchase GED Reading OR the Reading Exercise Book
Purchase GED Social Studies OR the Social Studies Exercise Book
Purchase GED Writing OR the Writing Exercise Book
Want even more practice? Check out this post on Free Online GED Science Test Preparation.