GeoGebra
GeoGebra
  • Home
  • News Feed
  • Resources
  • Profile
  • People
  • Classroom
  • App Downloads
About GeoGebra
Contact us: office@geogebra.org
Terms of Service – Privacy – License

© 2023 GeoGebra

Napier's Bones

Author:
Michael Borcherds, Roy Wright
Topic:
Arithmetic, Multiplication
This is a quick demonstration of how "Napier's bones" work for multiplication of a large number (up to nine digits in this demo) by a one-digit number. A description and explanation of "Napier's bones" can be found on Wikipedia.
Change the two numbers at the top to see further examples.

New Resources

  • Polygon Angles: Quick Thin Slice Explorations
  • Radian Placement Practice
  • Cartesian to Polar Graphs
  • Minimalist Chair
  • Ball Structure

Discover Resources

  • Dewey Miller Perpendicular Bisector
  • SSS Triangle
  • Graphing Rational Functions
  • Area of same triangle with different bases and heights
  • Hình 3.27 trang 103

Discover Topics

  • Arithmetic Mean
  • Functions
  • Interest Calculation
  • Mode
  • Function Graph

GeoGebra

  • About
  • Partners
  • GeoGebra on Tests
  • News Feed
  • App Downloads

Apps

  • Calculator Suite
  • Graphing Calculator
  • 3D Calculator
  • CAS Calculator
  • Scientific Calculator

Resources

  • Classroom Resources
  • Learn GeoGebra
  • Classroom
  • Geometry
  • Notes
  • Terms of Service Privacy License
  • Facebook Twitter YouTube