Reference, Discrete Mathematics, Mathematics 

Best-selling author Nigel Cook's new fourth edition of Introductory Mathematics is a complete “prep-math” book. Clear and easy-to-understand, this book employs an integrated approach, reinforcing all math topics to show the value of math as a tool, enabling readers to retain all information. Beginning with fractions and decimal numbers and proceeding on to build a solid foundation in exponents, the metric system, algebra, trigonometry, logarithms, graphs, and binary math, this easy-to-understand book will give readers the math skills needed for their careers. A valuable reference book for those in the technical trades, including electricians, automotive mechanics, printing employees, landscapers, surveyors, machinists, carpenters, food service employees, manufacturers, welders, plumbers, masons, drafters, and more. - from Amzon