Directory of Division Rules Resources

Home > Science > Math > Number Theory > Factoring > Division Rules

Elementary division rules enable you to quickly determine small factors of a given number. These rules are useful for reduction of fractions and for rapid determination of simple factors.

Resources in This Category

• Digital Divisibility Tests

  http://www.primepuzzles.net/puzzles/puzz_101.htm
  From Carlos Rivera's Prime Puzzles and Problems collection. Carlos asks for the general divisibility rules for any prime number.

• Divisibility Tests

  http://math.furman.edu/~mwoodard/fuejum/textv/volume3text.html
  From the Furman University Electronic Journal of Undergraduate Mathematics. Apoorva Khare's paper is available as an abstract, DVI, and PostScript.

• Explaining the Divisibility Rules

  http://mathforum.org/k12/mathtips/ward.html
  Proof of the elementary division rules, plus some lesser-known rules for larger divisors and other bases.

 

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