This book is a concise presentation of the basic concepts used in evolving numerical methods with special emphasis on developing computational algorithms for solving problems in algebra and calculus on a computer. All numerical methods are illustrated using carefully chosen examples. The book provides coverage of: IEEE standard for representing floating point numbers used by computers Direct and iterative methods of solving simultaneous linear algebraic equations, interpolation and curve fitting. Pitfalls in numerical computation due to rounding and truncation when computers are used. NEW TO THE FOURTH EDITION The new edition of this popular book is thoroughly revised, and some new sections are also added. It also includes learning goals in each chapter. TARGET AUDIENCE Undergraduate science and engineering students who have taken a first course in differential and integral calculus