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The set {1,2,3......}
Natural numbers
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The set {0,1,2,3,.....}
Whole numbers
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The set{...-2,-1,0,1,2...}
Integers
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A number greater than zero
Positive numbers
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A number less than zero
Negative numbers
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The set of numbers expressed in the form of a fraction a/b, where a and b are integers and b doesn't equal 0
Rational numbers
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Lines and sets that never end, continue to infinity
Infinity
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The absolute value of a number n is it's distance from zero on a number line and is represented by |n|
Absolute Value
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Every positive rational number and it's negative pair
Opposite
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A number and it's opposite are additive inverses of each other. The sum of a number and it's additive inverse is 0.
Additive Inverse
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One of two equal factors of a number
Square root
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A number whose square root is a rational number
Perfect Square
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The symbol used to indicate a nonnegative square root
Radical sign
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Numbers that cannot be expressed as terminating or repeating decimals
Irrational Number
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The set of irrational numbers and the set of irrational numbers together
Real Numbers
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A rational number that is close to, but not equal to the value of am irrational number
Rational Approximation
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