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A symbol, usually a letter, used to represent a number.

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This song introduces the concept of variables in math. It defines a variable as a letter that "holds the place" of a number. Song written and recorded by Amanda G. Ellis, MT-BC For more songs, go to www.morewithmusic.org

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Statements that are true for any number.

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Commutative & Associative Properties of Addition

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TeacherTube User: Mrbrightcms TeacherTube URL: http://www.teachertube.com/viewVideo.php?video_id=192824 This is a math video lesson to help you with new math, math tricks, and or simple math questions you may have. The main properties of 8th grade

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Numbers expressed using exponents. The Power 3^(2) is read three to the second power, or three squared.

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Basic definition of what is a power and some different notation you may see. Check out mathwithmrbarnes.ca or mathvideos.ca

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A combination of numbers and operations.

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Property that states the sum of any number and 0 equals the number and that the product of any number and 1 equals the number.

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Expressions that have the same value.

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To multiply a sum by a number, Multiply each addend by the number outside the parentheses.

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The order in which numbers are added or multiplied does not change the sum or product.

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Commutative Properties of Addition & Multiplication

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Commutative & Associative Properties of Addition

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Commutative Property of Addition - MathHelp.com

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For a complete lesson on the properties of addition, go to http://www.MathHelp.com - 1000+ online math lessons featuring a personal math teacher inside every lesson!

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The way in which numbers are grouped does not change the sum or product.

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A combination of variables, numbers, and at least one operation.