# MATH MAGIC

## SCOTT FLANSBURG

"The Human Calculator"
with Victoria Hay, Ph.D.

INTRODUCTION

PART I

THE BASICS

1. Five Keys to Human Calculating
2. Addition
3. Cross-Multiplication
4. Complementary Multiplication
5. Box Multiplication
6. Squaring
7. A Hatful of Multiplication Tricks
8. Subtraction
9. Division
10. A Hatful of Division Tricks

PART II

PARTS OF NUMBERS

1. Finding Square Roots
2. Finding Cube Roots
3. Fractions and Decimals
4. Percentages

PART III

HANDY THINGS TO KNOW

1. Simplifying Math by Estimating
2. Quick-Check Your Answers
3. How We Measure Things
4. The Calendar Formula

PART IV

MATH IN REAL LIFE

1. Tips, Tax, and Change
2. Time: Jet Lag, Military Hours, Telling Time
3. How Big Is the Back Forty?

PART V

THE NEXT STEP

1. Introducing Algebra
2. A Test of Your Human Calculating

PART VI

APPENDICES

GLOSSARY

TABLES

Tables of Weights and Measures
The Metric System
Conversion Table-Metric and English Systems
Squares, Cubes, Square Roots, Cube Roots of Numbers

ANSWERS TO MATH PROBLEMS Copyright © 1996-2018 Alexander Bogomolny