## flashcard

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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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