-HIGH SCHOOL MATH-

- Classifying Numbers - A.1

Classifying Numbers (Alggebra) A.1

1.) Natural Numbers: Natural numbers are what you use when you are counting one to one objects. When you start using 1,2,3,4 and so on, you are using the counting numbers or to give them a proper title, you are using the natural numbers. Natural Numbers are numbers that are not negative, decimal, or fraction type numbers. The number "Zero" is not a natural number.

2.) Whole Numbers: Whole numbers are the same as "Natural Numbers", but this category includes the number "Zero". Sometimes, people include the number "Zero" in "Natural Numbers".

3.) Integer Numbers: Integer numbers are whole numbers with or without negative signs in front of that number. Some often refer to integers as the positive and negative numbers, such as -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5 ext.

4.) Rational Numbers: Rational numbers are numbers that contain integer, fraction, and decimal number types. Rational numbers can (not always) have numbers that continue on forever, (such as 7รท22) or repeat its self.

5.) Irrational Numbers: Irrational numbers are numbers that are not integers or fractions, but are decimal numbers that continue forever with no pattern, like pi (3.14...).

6.) Real Numbers: Real numbers are numbers that are natural, whole, integer, rational, and irrational numbers. Fraction and Decimal numbers are also known as real numbers. Practically all numbers are "Real Numbers".

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