Mark Zegarelli is a math and test prep teacher, as well as the author of eight For Dummies (Wiley) books, including SAT Math For Dummies, ACT Math For Dummies, and Calculus II For Dummies. He holds degrees in both English and math from Rutgers University and lives in Long Branch, New Jersey, and San Francisco, California.
I dedicate this book to the memory of my mother, Sally Ann Zegarelli (Joan Bernice Hanley).
Writing this second edition of Basic Math & Pre-Algebra For Dummies was an entirely enjoyable experience, thanks to the support and guidance of Lindsay Lefevere of John Wiley & Sons, Inc., editors Tracy Barr and Krista Hansing, and technical reviewer Mike McAsey. And many thanks to my assistant, Chris Mark, for his unfailing diligence and enthusiasm.
And thanks to the great folks at Borderlands Café, on Valencia Street in San Francisco, for creating a quiet and friendly place to work.
Finally, a shout out to my awesome nephews, Jake and Ben.
Executive Editor: Lindsay Sandman Lefevere
Project Editor: Tracy L. Barr
Copy Editor: Krista Hansing
Technical Editor: Michael McAsey
Project Coordinator: Sheree Montgomery
Cover Image: ©Jiri Moucka illustrations/Alamy