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13 Cards in this Set
- Front
- Back
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Variable
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A letter or symbol that represents a number
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Algebraic Expressions
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Numbers formed together with the operations addition, subtraction, multiplication, division, raising to powers or roots.
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Natural Numbers
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{1,2,3,4...}
Any positive number higher than 0 |
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Whole Numbers
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{0,1,2,3,4...}
Any positive number including 0 |
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Integers
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{...-4,-3,-2,-1,0,1,2,3,4...}
Any number Positive AND negative |
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Set Builder Notation
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Describes the members of the set but does not list them
{x|x is a natural number less than 3} |
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Roster Form
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Lists what is described in the Set Builder Notation
{1,2} |
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"E" or "is an element of"
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Symbol to show if a number is an element of a set
3E {1,2,3,4,5} |
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Real Numbers
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Any point on the number line
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Rational Numbers
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a/b
a and b are integers and b =/ 0 |
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Irrational Numbers
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a real number but express doesnt make sense
5/0= irrational |
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Subset
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Smaller group of numbers which belong to a bigger Set
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Absolute Value
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Distance on the number line
Always positive |
