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Rational numbers
Numbers that can be written as a fraction. As a decimal, numbers terminate/repeat.

Closure Property
 a+b is a real number
 ab is a real number


Associative Property
 (a+b)+c=a+(b+c)
 (ab)c=a(bc)


Inverse Property
 a+(a)=0
 a*1/a=a IF a doesn't equal 0.

Distributive Property
a(b+c)=ab=ac ab+ac=a(b+c)

Algebraic Expression
An expression involving variables.

Value of a variable
A number used to replace a variable

Mathematical Model
An expression that represents a real life model.

Compound Inequality
Two simple inequalities joined by "and" or "or".

Absolute Value
The distance from 0 to a number on a number line.

