# 1.1: Subsets of Real Numbers

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inequality

An inequality is a mathematical statement that relates expressions that are not necessarily equal by using an inequality symbol. The inequality symbols are , , , and .Real Number

A real number is a number that can be plotted on a number line. Real numbers include all rational and irrational numbers.Repeating Decimal

A repeating decimal is a decimal number that ends with a group of digits that repeat indefinitely. 1.666... and 0.9898... are examples of repeating decimals.Subset

A subset is a collection of numbers or objects within a larger set.Terminating Decimal

A terminating decimal is a decimal number that ends. The decimal number 0.25 is an example of a terminating decimal.Whole Numbers

The whole numbers are all positive counting numbers and zero. The whole numbers are 0, 1, 2, 3, ...### Image Attributions

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This lesson covers how to identify the subsets of real numbers and placing a real number into one of these subsets.

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Date Created:

Mar 12, 2013
Last Modified:

Aug 02, 2016
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