15 000 примеров по математике. Счет в пределах 100. Все способы вычислений и все виды заданий для автоматизированного навыка счета. 2 класс

The manual includes math examples on the basic topic of elementary school "Counting Within 100" and corresponding calculation algorithms. Each subtopic begins with a detailed explanation of how to perform the operation and contains various tasks that allow for a deeper understanding of the material. The student not only solves problems but also finds mistakes in examples, fills in missing numbers, solves problems against the clock, performs chains of examples, equations, and carries out calculations according to diagrams. For elementary school.