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 Related Terms
 Whole Numbers:  The set of numbers 0, 1, 2, 3, 4,.
Number Sets: A group of numbers that have a common property.
Integer: The set of numbers ...,-3,-2,-1,0,1,2,3,
Irrational Number: A number whose decimal form is nonterminating and nonrepeating. Irrational numbers cannot be written in the form a/b, where a and b are integers (b cannot be zero). So all numbers that are not rational are irrational.
Natural Numbers: The set of numbers 1, 2, 3, 4, ... Also called counting numbers.
Opposite Numbers: Two numbers that have the same absolute value but have opposite signs.
Rational Number: A number that can be written as a/b where a and b are integers, but b is not equal to 0.
Real Numbers: All the rational and irrational numbers; that is, all of the numbers that can be expressed as decimals.