###
evalutating expressions

plug in numbers variables and use order of operations to calculate.

###
expression

a variable or combination of variables, numbers, and symbols.

###
inequality

compares unequal expressions using one or more of these symbols: <, >, ≥, ≤, ≠

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inverse

the number, that when added or multiplied to, equals zero.

###
constant

a symbol representing a value that does not change. ie π

###
variable

a letter that is used to represent one or more numbes

###
commutative property

changing the order of the operands does not change the end result.

###
order of operations

pemdas

###
associative property

changing the grouping will not change the end result.

###
real number

any number that can be shown on a number line.

###
reciprocal

flipping the fraction numbers

###
integer

counting numbers, both negative and postive and zero.

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coefficient

the numerical factor in a term containing a variable.

###
equation

math sentence with an equal sign

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absoulte value

the distance a number has from zero on a number line. always postive.

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natural numbers

counting numbers, except zero.

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rationals

terminating or repeating decimals

###
irrational numbers

nonterminating

nonrepeating decimals

###
rational numbers

terminate

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