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COURSE: JUST 3900 INTRODUCTORY STATISTICS FOR CRIMINAL JUSTICE Boot camp: Order of Operations Peer Tutor Slides Instructor: Mr. Ethan W. Cooper, Lead Tutor © 2013 - - PLEASE DO NOT CITE, QUOTE, OR REPRODUCE WITHOUT THE WRITTEN PERMISSION OF THE AUTHOR. FOR PERMISSION OR QUESTIONS, PLEASE EMAIL MR. COOPER AT THE FOLLWING: coopere07@students.ecu.edu

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Order of Operations LEFT TO RIGHT: WRONG!!! ORDER OF OPERATIONS: CORRECT!!!

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Order of Operations Operations should be performed in the proper order and can be remembered by the following acronym: Operations should be performed in the proper order and can be remembered by the following acronym: Please Excuse My Dear Silly Aunt Sally (PEMDSAS) Please Excuse My Dear Silly Aunt Sally (PEMDSAS) Please(P)Parentheses Please(P)Parentheses Excuse(E)Exponents Excuse(E)Exponents My(M)Multiplication My(M)Multiplication Dear(D)Division Dear(D)Division Silly(S)Summation Silly(S)Summation Aunt(A)Addition Aunt(A)Addition Sally(S)Subtraction Sally(S)Subtraction This operation was not taught in high school.

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Order of Operations: Then and Now High School Please () Please () Excuse X 2 Excuse X 2 My Dear (*) (÷) My Dear (*) (÷) Aunt Sally (+) (-) Aunt Sally (+) (-) JUST 3900 Please () Please () Excuse X 2 Excuse X 2 My Dear (*) (÷) My Dear (*) (÷) Silly Ʃ Silly Ʃ Aunt Sally (+) (-) Aunt Sally (+) (-)

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Order of Operations Left to Right Order of Operations

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Order of Operations: Parentheses Exponents Multiplication Addition

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Order of Operations: Parentheses

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Order of Operations: Exponents

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Order of Operations: Multiplication and Division Here, we multiply, first.

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Order of Operations: Multiplication and Division Remember two things: 1)Multiplication and division should be done after parentheses and exponents. 2)Multiplication and division should be done, in order, from left to right. This time we divide, first.

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Order of Operations: Multiplication and Division

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Order of Operations: Summation

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Order of Operations: Addition and Subtraction

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Order of Operations

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Bell Work 4m 8m 5m 12x 5 6x Write an expression in simplest form that will solve for the perimeter of each of the triangles. 6x +5 +12x 18x + 5 8m +4m.

Bell Work 4m 8m 5m 12x 5 6x Write an expression in simplest form that will solve for the perimeter of each of the triangles. 6x +5 +12x 18x + 5 8m +4m.

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