This textbook is the result of the authors' experience of teaching the undergraduate students of the Faculty of Electronics and Information Technology at Warsaw University of Technology in the period 1985-2025, and in particular - the students following the English-medium programmes of study offered there during last 30 years. It is composed of seven chapters devoted to basic numerical problems, such as accuracy of computation, approximation of functions, numerical differentiation and integration, solving algebraic and differential equations. Each chapter contains a short general introduction followed by a considerable number of solved numerical problems. The textbook may be useful for students attending any engineering-oriented course of numerical methods.
