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200 Math Number Puzzles, including arithmetic, rounding, fractions, decimals, algebra, multiplication, ratios, word problems, and order of operations.
www.edhelper.com
Index to articles in Eric Weisstein's MathWorld in the area of number theory.
mathworld.wolfram.com
Category: Science > Math > Number Theory
Kevin Brown's collection of sci.math postings related to number theory topics.
www.mathpages.com
Category: Science > Math > Number Theory
Illustration of the Catalan numbers related to Euler's polygon division problem.
mathworld.wolfram.com
Index to hundreds of prime-related articles in Eric Weisstein's MathWorld.
mathworld.wolfram.com
A number of puzzles and math games.
www.what2learn.com
Category: Kids and Teens > School Time > Math > Homework Help
Ask Dr. Math FAQ: Prime Numbers
Archived questions and answers at different levels.
mathforum.org
Perfect Number - from MathWorld
Definitions and references.
mathworld.wolfram.com
Category: Science > Math > Number Theory > Factoring > Perfect Numbers
Free Printable Math Worksheets
Pages to teach younger children math and numbers.
www.kidzone.ws
Category: Science > Math > Education > Teaching Resources > Books and Worksheets
Number Theory section of the sci.math FAQ list.
db.uwaterloo.ca
Category: Science > Math > Number Theory
The path to number sense begins with a little green block! Come See the Math!
www.digi-block.com
Provides help in understanding math from the natural numbers to probability calculus.
www.math-knowledge.com
Category: Kids and Teens > School Time > Math
Published as math.NT/0006089, this note investigates numbers that are normal to no base whatsoever, and writes down explicitly such a number.
arxiv.org
Play with falling numbers and improve your math skills. An educational number game with similarities to Tetris.
www.valgetal.com
Category: Computers > Software > Shareware > Windows > Mathematics
Wikipedia: Mathematics Section
Free encyclopedia. Cover number systems, different math fields, foundations, history, applications, and famous problems.
en.wikipedia.org
Category: Science > Math > Reference
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