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https://cobbk12.blackboard.com/webapps/blackboard/conte nt/listContent.jsp?course_id=_17440_1&content_id=_116960 1_1&mode=reset

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1 st Period

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Guess the meanings of the following words: Variable Expression Base Constant Factor

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Why is it important to understand the “language” of mathematics? CCCA Unit 1

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Identifying Parts Guided NOTES

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a mathematical phrase that contains variables, numbers, and operators (i.e. addition, subtraction, multiplication, division, parentheses, square roots, and exponents) Examples:

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symbols or letters used to represent an unknown Examples:

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items that are being added, subtracted, or divided Examples: 3 terms: 5a 2, -2xy, and 3 4 terms: P, -2x, a 2, and b

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terms with same the variable raised to the same power Examples:

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the number in front of a variable Examples: 123 9 1

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the number up in the air next to a base the exponent of a number tells you how many times you multiply that number times itself Examples: 3 12 4

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is what the exponent sits on the part that has been raised to a power Examples: 2 x y

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a number that has no variable can be positive or negative Examples: -42 5 -8

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items that are being multiplied together can be numbers, variables, or what is inside the parentheses Examples: 1 and 6…. Or 2 and 3 9 and x and y (x + 2) and (y – 3) 3 and (z – 9)

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1. Simplify what is inside the parentheses 2. Take care of exponents 3. In order from left to right, multiplication or division 4. In order from left to right, addition or subtraction Examples: -18

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Sum Plus Add More Than Increased Together

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Difference Minus Decreased Less Than (swaps the order) Take away

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Quotient Half Divide by

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Product Twice Double Triple Times

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Square Cubed To the power of Raised to a power

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The sum of a number and 10 x + 10

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The product of 9 and x squared 9x 2

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9 less than g to the fourth power g 4 – 9

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8 + 3x Eight increased by three times x

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2. Four times a number plus 10 minus two times the same number is 6. 1. Five times a number increased by 5 is the same as 3 times the same number decreased by 7.

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Writing an Expression Worksheet WORKSHEET

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