Mental arithmetic. Multiplication and division

This course will tell you how to perform multiplication and division (with and without the remainder) of multi-valued numbers on the drum, solve examples with negative numbers.

This course should be taken by those who know how to count examples in soroban, using all the formulas from the course of mental arithmetic. This can be learned by completing the first block of the course.

Further, those who want to teach should pass the third block of the course "Methodical part", which reveals the methodological aspects of teaching the course of mental arithmetic. As a gift for the third year, you will receive a methodological guide on mental arithmetic for teachers.