Some people find the most difficult part of doing Residential, Commercial and Investment Real Estate is learning the formulas and doing the calculations. In this Self Study Textbook you will learn the formulas and how to "do the math" for valuation, mortgage costs and pay off figures, financial analysis, for comparing investments, determining returns on investments, commission calculations and more. You will be shown how to use the Hewlett Packard hand held calculator to do all of these sometimes simple and sometimes complex calculations. Ed Smith is the author of "Real Estate Formulas and Calculations using the HP10BII+ calculator". He notes. "It is immensely valuable, when I am with a client, to be able take out my calculator and immediately solve a problem. It's also pretty impressive to the client " This book teaches you how to use the HP10BII+ calculator to perform all the necessary real estate formulas. You will be taught step-by-step, with illustrations and practice problems in each chapter.