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counting/natural numbers
positive integers
whole numbers
positive integers including zero
integers
whole numbers and their opposites (negatives)
rational numbers
can be expressed as a fractions, terminating, and repeating decimals
irrational numbers
cannot be expressed as a ratio or fraction (decimals ending in …, square roots)
trancendental numbers (π, e)
cannot be expressed as roots of integers (π, e)
real numbers
numbers with a place on the number line
imaginary numbers
numbers with no place on the number line. (square roots of negative numbers, and nj)
complex numbers
all numbers, both real and imaginary
negative numbers
less than 0, including fractions
positive numbers
greater than 0, including fractions
non-integers
fractions, decimals, all irrational numbers
radicals
the little number on the square root thing
even numbers (integers)
numbers divisible by 2, including 0
odd numbers (integers)
not divisable by 2
Note 
Flashcard (23)