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Number
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A way to quantify a set of entities that share some characteristic
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Numeral
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The symbol that represents a numbers
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Base 10
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Uses 0 through 9 as the numerals for zero through nine and combines them to represent larger numbers
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Digit
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Individual numeral
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Natural Numbers
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Counting numbers; 1, 2, 3, 4, 5, …
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Whole Numbers
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Natural numbers plus 0; 0, 1, 2, 3, 4, …
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Integers
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Whole numbers plus all negative whole numbers; -3, -2, -1, 0, 1, 2, 3
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Real Numbers
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All numbers which are the integers plus all fraction/decimal numbers in between
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Rational Numbers
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All real numbers that can be expressed as p/q where p and q are integers and q is non-zero
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Irrational Numbers
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All real numbers that are not rational
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Number Line
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A model that illustrates the relationship among numbers
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Unit
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Type of measurement for each number (such as inches or centimeters)
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Addition
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The process of combining two or more numbers
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Sum
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The answer to an addition problem
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Plus Sign
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The sign that shows addition, +
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