Basic Math

Fractions

Fraction Addition Tutorial Explains Numerator, Denominator and Common Denominator.

Fraction Calculator Adds and subtracts fractions.

Fraction Calculator and Tutorial For Multiplication and Division of Fractions.

Miscellaneous

Arithmetic Quiz Generates 5 random problems in addition, subtraction, multiplication or division with 3 levels of difficulty for each. It's "flash cards" for the cyber-age.

Percentage

Percentage Tutorial and Calculators - Part 1 Basic concepts of percentages

Percentage Tutorial and Calculators - Part 2 Percent Increase & Decrease

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