Seal of the DSA
Dozenal Society of America
Promoting base twelve and alternative base mathematics
Support the DSA
Follow Us
Icon for DSA's Twitter Icon for DSA's Facebook Icon for DSA's RSS
Share This Page
Icon for sharing via Twitter Icon for sharing via Facebook Icon for sharing via email
The Dozenal Society of America
The DSA is a voluntary, nonprofit education corporation, organized for the conduct of research and education of the public in the use of dozenal (also called duodecimal or base-twelve) in calculations, mathematics, weights and measures, and other branches of pure and applied science.

Dozenal Divisibility Tests Quick Guide

Title: Dozenal Divisibility Tests Quick Guide
Author: Treisaran
Year: 11E9
Subject: Dozenal divisibility tests
An invaluable resource for anyone who wants to become more adept with dozenal arithmetic, particularly mental arithmetic. This fact sheet puts together all the major divisibility tests of the dozenal system into a single, easy-to-learn and easy-to-understand package.