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Compiled in accordance with the State Standard of General Primary Education. This manual combines the functions of a textbook and a workbook, which means it can be used instead of any textbook. The most effective publication for making up for educational losses in mathematics! It is intended for use in full-time, distance and blended learning; family learning / abroad. Each topic contains a brief theoretical background with samples and a system of mathematical tasks. The material is presented in a condensed form so that the child can master a mathematical topic in a short time / quickly repeat or consolidate what he or she has learned, etc.