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Algebra 1
terms
9
Mathematics
Not Applicable
09/11/2005

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Term
Whole Numbers
Definition
the set of natural numbers and zero.
W=(0,1,2,3,4,5...)
Term
Natural Numbers and Counting Numbers
Definition
the set of numbers used in counting
Term
Integers
Definition
whole numbers and their opposites
Term
Integers
Definition
whole numbers and their opposites
J=(...-3,-2,-1,0,1,2,3...)
Term
Rational Numbers
Definition
any number that can be expressed as the quotient of 2 integers. Q=Rational Numbers
It is impossible to represent the set of rationals using a graph or using the roster method. The rational numbers include al whole numbers, integers, decimals, and fractions.
Term
Irrational Numbers
Definition
cannot be expressed as the ratio of 2 integers. Ex- pi and the square root of 2
rationals and irrationals=reals
Term
Infinate set
Definition
members cannot be counted.
Ex.:Q,N,W,J,reals
Term
Finate set
Definition
members can be counted. Ex.: (the even numbers between 20 and 50)
Term
venn diagram
Definition
can be used to show the relatonship among sets of numbers.
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