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Published byMarianna Craig Modified over 9 years ago

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Integrated Mathematics Order of Operations

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Remember the Phrase Order of Operations Parentheses - ( ) or [ ] Parentheses - ( ) or [ ] Exponents or Powers Exponents or Powers Multiply and Divide (from left to right) Multiply and Divide (from left to right) Add and Subtract (from left to right) Add and Subtract (from left to right) “Please Excuse My Dear Aunt Sally” or PEMDAS.

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Evaluate 7 + 4 ● 3 Is your answer 33 or 19? Is your answer 33 or 19? You can get 2 different answers depending on what you did first. We want everyone to get the same answer so we must follow the order of operations. You can get 2 different answers depending on what you did first. We want everyone to get the same answer so we must follow the order of operations.

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PEMDAS Ex.1) Ex.1) 7 + 4 3 Ex.2) Ex.2) 14 ÷ 7 2 - 3 Ex.3) Ex.3) 3(3 + 7) 2 ÷ 5 Ex.4) Ex.4) 20 - 3 6 + 10 2 + (6 + 1) 4

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PEMDAS Ex.8) Ex.8) 7 + 4[(4 + 3)² - (3² + 1)] Ex.9) Ex.9) 2 3 - (6 4 2 )20 - 36 Ex.10) Ex.10) 4 4² + 12 ÷ 3 - (4 + 3)

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TRY THESE 11 2 + 18 - 3 3 · 5 16 - 2(10 - 3) 16 - 2(10 - 3) 24 – 6 · 4 ÷ 2 24 – 6 · 4 ÷ 2

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Evaluate A VARIABLE EXPRESSION To Evaluate a Variable Expression: To Evaluate a Variable Expression: 1. Substitute the given numbers for each variable 2. Use order of operations to solve

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Variable Expressions Ex.11) 2n(13 - n) - 10 for n = 8 Ex.12) 8y - 3x 2 + 2n for x = 5, y = 2, n =3 Ex.13) a = 1, b = 3, c = 5 (a + 2b)(bc – a) – 4ab Ex.14) a = 2, b = 3, c = 2 (a + b)² + 5 - c³

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Try These 5k 3 if k = -4 n = -8, m = 4, and t = 2

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