## (Pre) Algebra Vocabulary

##### Created by:

HMS7C  on October 25, 2010

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# (Pre) Algebra Vocabulary

 associative propertygrouping property; (a+b)+c=a+(b+c) OR (ab)c=a(bc)
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#### Definitions

associative property grouping property;
(a+b)+c=a+(b+c) OR (ab)c=a(bc)
commutative property order property;
a+b=b+a OR ab = ba
distributive property changes the order of operations;
a(b+c)=ab+ac
evaluate substitute values for variables,
then solve
zero property x 0 always equals zero
identity property + 0 or x 1 won't change the value
rational number can be written as a fraction
integers whole numbers and their opposites
irrational number can't be expressed as a fraction
algebraic expression contains variables, numbers and operations
numerical expression contains numbers and operations
order of operations PEMDAS
simplify combining like terms
equation mathematical sentence that contains an equals sign
absolute value distance from zero on a number line
variable a letter that stands for a number
opposites numbers that are the same distance from zero
but have different signs
like terms terms that have the same variable
coefficient a number in front of a variable
numerator the top number of a fraction
denominator the bottom number in a fraction
mixed number a whole number and a fraction
improper fraction the numerator is bigger than the denominator
proper fraction the numerator is less than the denominator
simplest form a fraction that can't be reduced
equivalent fractions two different fractions that represent the same number

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