Mental arithmetic is one of the ways to develop a child's intelligence by performing calculations in the mind. First, the child learns to count on abacus and trains fine motor skills of the hands. Then the abacus is removed and the child imagines it in his head, thus developing imagination and creative thinking. As a result, the child copes with intellectual and creative work much easier. He learns to solve problems not only quickly, but also in a non-standard way.
An introduction to mental arithmetic. Working with numbers 1-9 in Abacus.
At this stage of training, the child will learn what mental arithmetic is, the rules for working with an abacus and using the thumb and forefinger. Also, the child learns to add and subtract numbers from 1 to 9 using an abacus.
Working with numbers 10-99 in Abacus.
Having mastered the work with units, the child acquires the skill of calculating (adding and subtracting) tens (10-99)
Working with numbers 100-999 in Abacus.
In this part of our course, the child learns to add and subtract three-digit numbers.
Addition and subtraction methods using five.
In this part of the course, the child will learn how to apply the “help of brother” formula with different numbers, working with subtraction and addition.
Addition and subtraction methods using formulas.
In this part of the course, the child is introduced to the formulas for adding and subtracting various numbers, applying them with simple examples.
Addition and subtraction by the combined method.
In this part of the course, the child first encounters examples where it is necessary to use the combined method.
The mental calculation system on the abacus.
This is the final stage of the course in which the child develops the skill of mental calculations by visualizing the abacus.