A child prodigy's heart is a book that introduces fast calculation methods. The content is divided into three parts: fast algorithm of addition, subtraction, multiplication and division and mathematical magic. The content is simple, easy to understand and comprehensive. The algorithm is easy to popularize, the method is feasible, and the training method is gradual. Mastering this method can significantly improve the calculation speed and accuracy.

The child prodigy mental arithmetic is an excellent book that can be taught by intuition. By studying the contents of this book, we can not only improve our computing ability, but also strengthen people's thinking and judgment ability in developing the brain. What is particularly important is to inspire us how to discover, summarize and induce the laws of mathematical calculation methods, thus promoting our intellectual development.

This book can be used by teenagers for self-study, and can also be used as a reference book for parents, kindergarten teachers and teachers, especially for people engaged in commercial economy.