Learning is a value for every student, for every school, for parents, teachers and for society as a whole. Numerous studies show that educational effects can be achieved in traditional (frontal) teaching, but the results of experimental research in most cases show that under the influence of innovations and modern strategies, methods and procedures, educational achievements are more easily achieved, which can be viewed comprehensively in the context of research outcomes related to both education and upbringing. The application of new approaches in learning leads to the development of students' creative thinking, the teaching process becomes more creative. The aim of this paper is to determine the level of achievement of students solving mathematical problems from Numerical Expressions by applying problems by levels of complexity, problem solving of problems and the traditional way of solving problems.

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