Introduction
  • Introduction
The Trachtenberg speed system of basic mathematics
  • The Trachtenberg system
What does squaring a number really means, visually?
  • What does squaring a number really means, visually?
Squaring single-digit numbers
  • Squaring single-digit numbers
  • Assignment: Squaring single-digit numbers
Squaring 2-digit numbers
  • Squaring 2-digit numbers
  • Assignment: Squaring 2-digit numbers
Squaring 3-digit numbers
  • Squaring 3-digit numbers
  • Assignment: Squaring 3-digit numbers
Testing your skills
  • Assignment: Test your skills