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Home / Science / Math / Number Theory / Factoring / Division Rules
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Web Sites
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- Digital Divisibility Tests - From Carlos Rivera's Prime Puzzles and Problems collection. Carlos asks for the general divisibility rules for any prime number.
www.primepuzzles.net/puzzles/puzz_101.htm
- Divisibility Criteria - Ways of telling whether one number divides another without actually carrying the division through, constructed here in terms of the digits of the number.
www.cut-the-knot.com/blue/divisibility.html
- Divisibility Tests - Jim Loy explains the divisibility rules up to 11, including a detailed study of 7.
www.jimloy.com/number/divis.htm
- Divisibility Tests - From the NRICH Maths Project Cambridge, England. Dr. Tim Rowland explains the smaller rules and looks at the rules to 7, 11, 13, and 19.
www.nrich.maths.org.uk/mathsf/journalf/jan97/art1/index.html
- Divisibility Tests - From the Furman University Electronic Journal of Undergraduate Mathematics. Apoorva Khare's paper is available as an abstract, DVI, and PostScript.
math.furman.edu/~mwoodard/fuejum/textv/volume3text.html
- Divisibility War - A card game to teach divisibility rules.
edweb.sdsu.edu/courses/edtec670/Cardboard/card/d/Divisibility.html
- Explaining the Divisibility Rules - Proof of the elementary division rules, plus some lesser-known rules for larger divisors and other bases.
mathforum.org/k12/mathtips/ward.html
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