Dorothy Stein

• Ada, a life and a legacy
• Ada Lovelace
• Ada
• People Who Count
• 10000 Mental Mathematics Exercise Problems to Help You Calculate Faster Through Addition, Multiplication, Subtraction, and Division Shortcuts
• 3000 Secrets to Master Elementary and Intermediate Average Problems on the SAT and GMAT
• Commercial Arithmetic and Business Mathematics Basics
• Everything You Need to Know about Simple Interest
• Get Ready for Exponents
• Introduction to Binary Arithmetic
• Mathematics for Tests and Exams
• Mental Math Made Easy