Primary School Math Shortcuts (Suitable for Older Grades) (Suitable for Older Grades)

Author: Du Guolin
Publisher:
Publish Date: 2000-08-01
Features: The book is divided into two volumes, targeting low-middle grades and high grades, respectively, introducing 100 essential techniques for arithmetic operations (addition, subtraction, multiplication, and division) on integers, decimals, and fractions. Each volume contains 50 techniques. Each section includes four parts: "Did You Know," "Ordinary Algorithms," "Tricks for Quick Calculations," and "Try It." In the "Tricks for Quick Calculations" section, the focus is on the application range, calculation patterns, formulas, mnemonics, and detailed explanations of typical examples. To help students quickly master the tricks, a sufficient number of practice exercises are arranged in the "Try It" section.