Practical Introduction to Abacus (Revised Edition)

Author: Huang Jinquan
Publisher:
Publish Date: 2005-10-01
Features: This book comprehensively and systematically introduces the basic knowledge of abacus, as well as the calculation methods for abacus addition, subtraction, multiplication, and division, abacus-style mental arithmetic addition, subtraction, multiplication, and division, percentages, powers and roots, area, volume, and capacity. It also includes methods for identifying errors in abacus calculations. The appendix introduces the "National Abacus Calculation Technique Grading Standard," explanations of the requirements for each grade, and two complete sets of practice questions for the National Abacus Calculation Technique Grading Standard. This book is suitable for self-study and reference by、, and can also serve as a teaching material and reference book for abacus instruction in relevant schools.