15,000 Examples in Mathematics. Counting Within 1000. All Calculation Methods and All Types of Tasks for Automated Counting Skills. Grades 3-4

The manual includes mathematical examples on the basic topic of elementary school "Counting Within 1000" and corresponding calculation algorithms. The tasks in the manual allow for a deeper understanding of the material. The student does not just solve an example but also finds errors in examples, inserts missing numbers, solves examples under time constraints, equations, chains of examples, and performs calculations based on schemes. The manual can be used in mathematics classes as well as for independent study at home.