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## Rational Numbers

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 Numbers - Rational Numbers - Contents

The set of rational numbers includes all numbers that can be expressed as one integer divided by another integer, also known as common fraction. The term rational comes from the word ratio. A ratio is the comparison of one number over another number through division. When writing rational numbers in decimal form they yield a decimal fraction which has a finite decimal part or an infinitely repeating decimal part. For example, one eighth equals .125 which is finite, and one-third equals .33333. . ., that repeats infinitely. The set of rational numbers includes the set of integers and the set of natural numbers. A rational number can be a negative number or a positive number. It is a proper subset of the entire set of real numbers. The set of real numbers also includes irrational numbers. Within the set of rational numbers the arithmetic functions of addition, division, multiplication and subtraction will lead to another rational number.

 Numbers - Rational Numbers - Facts
The rational numbers include all real numbers that can be expressed as common fractions, such as ¼, ½, ¾ 11/13.
 Numbers - Sections - Chapters 1 - Natural Numbers 2 - Zero 3 - Negative Numbers 4 - Integers 5 -Rational Numbers 6 - Common Fractions 7 - Decimal Fractions 8 - Irrational Numbers 9 - Absolute Value 10 - Infinity 11 - Special Numbers 12 - Prime Numbers 13 - Imaginary Numbers 14 - Systems of Numeration

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