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websites
http://www.kwiznet.com/p/takeQuiz.php?ChapterID=2377&CurriculumID=25&Num=1.1

Real Numbers
http://www.mathsisfun.com/numbers/real-numbers.html

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https://www.bing.com/videos/search?q=irrational+number+&&view=detail&mid=6BE360D4023B7832EFBC6BE360D4023B7832EFBC&FORM=VRDGAR

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http://www.mathsisfun.com/irrational-numbers.html

http://www.factmonster.com/ipka/A0876704.html

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any real number that cannot be expressed as the exact ratio of two integers.

https://www.merriam-webster.com/dictionary/irrational%20number

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https://www.bing.com/videos/search?q=Rational+Numbers+Grade+8&&view=detail&mid=BEBC9249BC7F8883E8EABEBC9249BC7F8883E8EA&FORM=VRDGAR

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http://www.mathsisfun.com/rational-numbers.html

http://www.factmonster.com/ipka/A0876704.html

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In mathematics, a rational number is any number that can be expressed as the quotient or fraction of two integers.

https://www.merriam-webster.com/dictionary/rational%20number