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# Real Numbers

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Author: Laura Kniffin
##### Description:

New terms and definitions
Identifies real numbers as either rational or irrational

This packet includes definitions and a diagram better explaining what real numbers include.

(more)

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Tutorial

## New terms you need to know:

Whole Numbers: numbers 0, 1, 2, 3, 4......

Integers: numbers ....-3, -2, -1, 0, 1, 2, 3....

-Positive Integers: integers that are greater than 0 (1, 2, 3...)

-Negative Integers: integers that are less than 0 (-1, -2, -3...)

-The integer 0 is neither negative or positive

Rational Numbers: a number a/b where a and b are integers and b is not equal to 0. For example: (-1/2) is a rational number because it can be written as (1/-2), as well. When you divide rational numbers your decimal expansion will repeat or end (0.5, 0, .1313...)

Irrational Numbers: numbers whose decimal expansions never repeat. Examples: 1.414213562373...(sqrt(2)) or 3.141592653589...(pi)

## What are Real Numbers?

Real Numbers include:

-all whole numbers

-rational numbers

-irrational numbers

Real Numbers DO NOT include:

-imaginary numbers such as sqrt(-1)

-infinity