The article actualizes the problem of the formation of control and evaluation activities of junior schoolchildren in mathematics lessons, reveals the essence of the basic concepts of the study. Various aspects of control and evaluation activities are described. The problem of readiness to use modern means of assessment is considered. Methods and means of forming control and evaluative independence of primary schoolchildren are systematized. The problems that are encountered when using innovative assessment tools are identified, as well as the advantages of modern assessment tools in comparison with the traditional system. The stages of the formation of control and evaluative activity in younger schoolchildren, implying the development of evaluative independence, have been determined. Control and evaluation activities should be considered as an element of formative assessment, containing control and evaluation activities of the teacher and the student. The federal state educational standard of primary general education is focused on achieving the planned results: personal, metasubject and subject. When considering metasubject results, universal educational actions are distinguished, consisting of regulatory universal educational actions, including elements of control and assessment. During the formation of control and assessment, junior schoolchildren develop control and assessment independence. Until now, the assessment system was built within the framework of a subject-oriented approach, therefore it reflects only the result of mastering knowledge in each subject, and not educational and cognitive activities or, moreover, the assessment of personal and metasubject educational achievements of students. In the new assessment system, criteria are developed jointly by the teacher and students and are aimed at ensuring that students participate in assessment and assessment activities, thereby developing the skills of control, mutual control and self-assessment. The development of pedagogical science, the experience of Russia’s participation in international procedures for assessing the quality of education, the introduction and implementation of the Federal State Educational Standard and the resulting changes in the system for assessing learning outcomes determined the relevance of the topic under consideration.