Didactic principles of training technique of doing mathematical sums with the economic content

The importance of the problem is shown. The article deals with characteristics of a notion «didactic principle». The analyzed principles take into account training conditions. The publication describes twoness of the principles. It focuses on the leading principles of training to emphasize their importance for a training technique of doing mathematical sums with the economic content. The article introduces the systems approach to creation of the training technique. It also presents system of training principles.