SUMMARY
The article deals with the question of the open calculated tasks test control. These materials are focused on basic algorithmic level of educational activity. A method for estimating the control results based on the implementation of the minimum number of open computational tasks is proposed. The technique allows the possibility of refutation mark, exposed by a computer program. It also describes, the characteristics of the controlling program, realizing the method. There are presented the results of calculated tasks execution using the developed program. Information of the article can be used for control tests developing at any algorithmic level of educational activities and for researching of complexity of open calculated tasks.