Gem Abacus Mental Arithmetic

About This Novel

The so-called abacus mental arithmetic refers to abacus-type mental arithmetic. Abacus is a calculation method that uses the abacus as a tool to perform operations such as addition, subtraction, multiplication, division, and square root. There are certain rules and formulas for the abacus movement skills. Once you are familiar with abacus, you will start another type of mental arithmetic training. You can restore abacus through simulation and complete abacus calculations in your brain, which is what we call abacus mental arithmetic.

You Might Also Like

Reborn Female General

Qianshan Tea Guest

1.3M9.6