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variable
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a letter or symbol used to represent a value that can change
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terms list

variable
a letter or symbol used to represent a value that can change
constant
a value that does not change
expression
mathematical sentence; no equal sign
evaluate
find the value
opposites
two numbers whose sum is zero
additive inverses
a number and its opposite
reciprocal
one of a pair of numbers whose product is 1
multiplicative inverse
a number and its reciprocal
natural numbers
counting numbers 1,2,3,.....
whole numbers
the natural numbers and zero: 0,1,2,3,.....
integers
whole numbers and their opposites: ...-3,-2,-1,0,1,2,3,....
rational numbers
Any integer that can be written (a/b) where b≠0
terminating decimals
rational numbers in decimal form that have a finite number of digits: ex) 1.5,2.75, 4.0
repeating decimals
A decimal whose decimal digits eventually repeat in the same pattern.
irrational numbers
numbers that cannot be expressed in the form a/b, where a and b are integers and b =0.
absolute value
distance a number is from zero on the number line
sum
result of an addition
difference
result of subtraction
product
result of multiplication
quotient
result of division
equation
mathematical sentence that contains an = sign
commutative property of addition
a+b=b+a
commutative property of multiplication
ab=ba
associative property of addition
(a+b)+c=a+(b+c)
associative property of multiplicaiton
(ab)c = a(bc)
distributive property
a(b+c) = ab+ac
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