## flashcard

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Front
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
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
difference
result of subtraction
product
result of multiplication
quotient
result of division
equation
mathematical sentence that contains an = sign
a+b=b+a
commutative property of multiplication
ab=ba
(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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