View a list of common divisibility rules for 2-10 and read an explanation of patterns and learn about generalizations. Includes formal proofs in .PDF format.

Lean how to play this card game that teaches how to use divisibility tests to state that a number is divisible by 2, 3, 4, 5, 6, 9, and/or 10.

Read an abstract and download a paper that gives a new method to test the divisibility of any positive integer by another. Available in PostScript and dvi files.

Dr. Rob from Ask Dr. Math answers a user's question and explains why divisibility rules work. Also includes examples on higher numbers.

Access this list of rules that can aid users when reducing fractions. Includes divisors up to 12.

Dr. Tim Rowland writes this article on divisibility tests with explanations, examples, and special tests for integers 7, 11, 13, and 19.

Lists a divisibility tests and offers a puzzle for users to figure out. Includes references and user-submitted solutions.