The manual is compiled in accordance with the modern school program in chemistry, which sets special requirements for solving problems as an important factor that activates the process of teaching chemistry and contributes to the formation of logical thinking skills. The manual considers almost all types of computational problems: calculation by chemical formulas; computational problems for solutions; calculation by chemical equations. Complicated tasks designed to repeat and summarize the entire material are completed. In each section, a method for solving problems of varying complexity is given and tasks for self-control are given, allowing the student to check the level of assimilation of the relevant educational material . Recommended for students of chemical and non-chemical faculties in the disciplines "Chemistry", "Inorganic chemistry", "Methods of teaching chemistry", "Basic concepts and laws of chemistry" . Can be used by the preparatory department listeners.