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Terms in this set (12)
Natural numbers (N)
Counting numbers starting at 1
Whole numbers (W)
Natural numbers plus 0
Integers (Z)
Natural numbers, zero and their opposites (negatives)
Rational numbers (Q)
Numbers that can be written as fractions (includes integers, repeating decimals, and terminating decimals)
Positive integers
Integers that have a + sign
Negative integers
Integers that have a - sign
Even Numbers
Integers divisible by 2, number ends in 0,2,4,6,8,
Odd Numbers
Integers NOT divisible by 2. number ends in 1,3,5,7,9
Real Numbers (R)
rational numbers + irrational numbers
Irrational Numbers (I)
Numbers that cannot be written as fractions, repeating decimals, or terminating decimals. They are non-repeating, and non-terminating decimals
set
a collection of objects. Uses { } to denote a set.
Subsets
When every element of A is also an element of B . Set A is a subset of Set B
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