Real Numbers: What are they? Web Resource: http://www.mathsisfun.com/numbers/real-numbers.html

Definition: Rational Numbers can be written as a ratio of two numbers, as a fraction, and as repeating or terminating decimals.

Web Resource: http://www.mathsisfun.com/rational-numbers.html

Definition: Irrational numbers are numbers than cannot be written as a ratio of two numbers or a fractions; they can only be written as non-repeating or non-terminating decimals.

Web Resource: http://www.mathsisfun.com/irrational-numbers.html