The so-called abacus mental arithmetic is abacus mental arithmetic. Abacus calculation is a calculation method that uses abacus as a tool to perform operations such as addition, subtraction, multiplication, division and square root. There are certain rules and formulas in its bead-carrying skills. When the user can skillfully operate the abacus, he can not only get the correct answer quickly, but also describe the disk type, grade and floating change of the abacus in his mind through the growth of brain cells.

This vivid abacus image is called "virtual disk". It completes abacus calculation in the brain through the process of perception, image and memory, which is what we call abacus mental calculation.

The speed of mental arithmetic is amazing. Often, as long as you hear the number of questions or see the calculation questions yourself, the calculator can blurt out the answers or write them out immediately. Therefore, abacus mental center is an advanced computing technology.

Extended data

Abacus mental arithmetic is inseparable from mathematics. Abacus mental arithmetic is a unique computing system based on mathematical principles, using abacus as a tool and using abacus to represent numbers. Mathematics is an abstract thinking activity, and it is difficult to learn mathematics because of poor abstract thinking ability in childhood. Integrating abacus mental arithmetic into primary school mathematics is conducive to solving the problem of difficult mathematics learning in the enlightenment stage.

In the current primary school mathematics textbooks, the tedious calculation process wastes a lot of time for primary school students. Practice shows that abacus mental arithmetic saves about 50% of thinking and division saves about 70% of thinking. Multiplication and division operations pay special attention to the simplification of "genes". Numbers and beads are symbols.

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