The document defines key vocabulary terms related to rational numbers, including rational number, fraction, terminating decimal, repeating decimal, reciprocal, least common denominator, numerator, denominator, and least common multiple. Examples are provided to illustrate the meaning of each term.

1. Rational Numbers
Vocabulary words

2. Rational Numbers
Noun
A number that can be written as the ratio of two
integers or as a/b where b can not be a 0.
Fraction
Suzy recognized that money
uses rational numbers.
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3. Terminating Decimals
Noun
A decimal that ends.
Johnny stated that a quarter is a
terminating decimal.
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4. Repeating Decimals
Noun
A decimal that has a pattern that repeats.
Recurring decimal
When discussing repeating
decimals in class, 1/3 of the class
knew that this was one.
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5. Reciprocal
Noun
The inverse of a rational number when multiplied
will have a product of one.
Multiplicative Inverse
Cara stated that the reciprocal of
¾ is 4/3.
Denominator
Numerator
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6. Least Common Denominator
Noun
The smallest multiple that the rational numbers
have in common and is used for the denominator.
Least common multiple
Josh and Steven found that the
least common denominator for ¼
and 1/3 is 12.
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7. Numerator
Noun
The part of the rational number that is on top and
is the quantity being divided into.
Top or dividend
Jack said that the numerator of
5/16 is 5.
Numerator
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8. Denominator
Noun
The part of the rational number that is on the
bottom or being divided by.
Bottom or divisor
Jack said that the denominator of
5/16 is 16.
Denominator
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9. Least common multiple
Noun
The smallest common multiple of two numbers.
Lowest common multiple
The least common multiple of 3
and 4 is 12.
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10. 10/1/2012
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