Analytical chemistry as an academic discipline occupies a special place in the system of training chemical teachers. The analytical chemistry course at the Pedagogical University allows students to apply theoretical knowledge in the practice of chemical analysis and gain experience in independent research work. Training in analytical chemistry in accordance with modern requirements not only develops academic competencies, but also forms certain professional and socio-personal competencies. Training in the course of analytical chemistry at the pedagogical university consists of mastering the theoretical and theoretical part (a course of lectures), performing laboratory work and seminars. In seminars, a lot of time is devoted to solving problems. Problem solving plays an important role in the study of the basics of chemical science. Solving problems, future teachers not only master chemistry, but also require the ability to apply the level of knowledge gained in physics and mathematics. Computational tasks in the chemistry course at the university perform many functions. In particular, it allows students to carry out interdisciplinary communication, helps to consolidate the information received in the lesson. The article presents examples of calculating the gravimetric factor, the mass of the sample and the mass fraction of the component being determined based on the topic "Gravimetric analysis" using several methods.