Rational Numbers

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Algebra Terms

A helpful scientific calculator that runs in your web browser window.

Excellent site showing examples of algebra, trig, calculus, differential equations, and linear algebra.

Some worked example problems that point out many common errors students make when solving them.

This page describes the sets of numbers, natural, whole, integers, rational, irrational and real numbers. Gives examples and organizes the information well.

Explains what Natural Numbers, Whole Numbers, Integers, Rational Numbers, Irrational Numbers, and Real Numbers are.