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Denominator
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The number below the line in a fraction. Denotes how many parts the whole is divided into.

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Equivalent
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Two fractions that express the same part of a whole. There is a number by which both the numerator and denominator of one fraction can be multiplied or divided to yield an equivalent fraction. 1/4, 2/8, and 3/12 are all equivalent fractions.

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Fraction
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Describes part of a whole. 3/4, 1/6, and 19/4 are all examples of fractions.

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Improper Fraction
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A fraction whose numerator is equal to or greater than its denominator.

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Least Common Denominator
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The least common multiple of the denominators of two or more fractions. That is, the lowest number which is a multiple of both denominators.

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Lowest Terms
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A fraction whose numerator and denominator have no common factors is in *lowest terms.*

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Mixed Number
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A number composed of a whole number and a fraction.

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Numerator
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The number above the line in a fraction. Denotes the number of parts that are being taken.

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Proper Fraction
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A fraction whose numerator is smaller than its denominator.

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Reduced
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Written in lowest terms; that is, written as a fraction whose numerator and denominator have no common factors.

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Repeating Decimals
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Decimals that endlessly repeat one number or a group of numbers.

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Terminating Decimals
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Decimals that do not continue after a certain place (that continue in an endless string of zeros).