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Rational & Irrational Numbers

Natural Numbers Counting numbers such as 1, 2, 3, 4, ...
Whole Numbers Natural numbers and zero
Integers Whole numbers and their opposites
Rational Numbers Natural numbers, whole numbers, integers, fractions, terminating decimals, and repeating decimals (numbers that can be written in fractional form)
Irrational Numbers Numbers that cannot be written in fractional form
Square Root (of a Number) A value that can be multiplied by itself to give the original number
Radical Sign The sign placed before an expression to denote that the square root is to be extracted
Perfect Square The product of a rational number multiplied by itself
Terminating Decimal A decimal number that has digits that do not go on forever
Repeating Decimal A number whose decimal representation eventually becomes periodic (the same sequence of digits repeats indefinitely)
Created by: kellie-fuehrer1