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Order of Operations By: Lisa Foti EDT 210 Wednesday 9–10:50

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Objective: To give students a better understanding of the order of operations. Practice problems and quizzes are included to assist in the lesson. Audience: Fourth to sixth grade.

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Menu P.E.M.D.A.S. Quiz Practice Credits Home What does order of operations mean?

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Order of operations is the order in which you solve a math problem with many components. The first rule of order of operations is P.E.M.D.A.S. Dont forget to solve the problem from left to right!

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PleasePlease ExcuseExcuse MyMy DearDear SallySally AuntAunt

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Parentheses The first step of the order of operations is parentheses. Ex. (3 x 6) = 18 Ex. (3 x 6) + 2 = 20 18 + 2 = 20

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Exponents The second step of the order of operations is exponents. Ex. (3 + 2) 2 = 25 5 2 = 25 Ex. 3 + (3 + 2) 2 = 28 3 + 25 = 28

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Multiplication The third step of the order of operations is multiplication. Ex. 6 x 4 = 24 Ex. (3-2) 2 x 4 = 4 1 x 4 = 4

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Division The fourth step of the order of operations is division. Ex. 8 ÷ 2 = 4 Ex. 8 ÷ 2 + (3 x 6) = 22 4 + 18 = 22

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Addition The fifth step of the order of operations is addition. Ex. 3 + 6 = 9 Ex. 3 + 4 ÷ 2 = 4 3 + 2 = 4

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Subtraction The last step of the order of operations is subtraction. Ex. 16 – 4 = 12 Ex. 18 – (2 + 2) 2 = 2 18 - 16 = 2

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Practice (3 + 5) 2 – 2 =28 – 3 2 x 2 = 3 + 8 ÷ 4 + 12 = (3 + 5) – 2 = Answers Copy the following problems into your notebook and practice them.

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Practice 4 2 + (2 x 5) x 3 – 6 ÷ 2 = Answers Copy the following problems into your notebook and practice them. (3 x 2) 2 ÷ 5 – 3 + 4 =

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Practice Need extra help? Try this: More order of operation problems

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Quiz 12 x 2 – 4 x 6 = Copy the following problems on a piece of paper and hand them in when you are done. (12 + 2) – 12 ÷ 2 2 x 1 = Answer

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Quiz (3 x 2) 2 x 4 ÷ 2 + 3 2 – 4 = Copy the following problems on a piece of paper and hand them in when you are done. (12 + 2) – 12 ÷ 2 2 x 1 = Answer

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Practice Answers (3 + 5) 2 – 2 = 62 8 2 – 2 = 62 64 – 2 = 62 28 – 3 2 x 2 = 10 28 – 9 x 2 = 10 28 – 18 = 10 3 + 8 ÷ 4 + 12 = 17 3 + 2 + 12 = 17 5 +12 = 17 (3 + 5) – 2 = 6 8 – 2 = 6

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Practice Answers 4 2 + (2 x 5) x 3 – 6 ÷ 2 = 43 16 + 10 x 3 – 3 = 43 16 + 30 – 3 = 43 46 – 3 = 43 (3 + 2) 2 ÷ 5 – 3 + 4 = 6 5 2 ÷ 5 – 3 + 4 = 6 25 ÷ 5 – 3 + 4 = 6 5 - 3 + 4 = 6 2 + 4 = 6

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Quiz Answers 12 x 2 – 4 x 6 = 0 24 – 24 = 0 (12 + 2) – 12 ÷ 2 2 x 1 = 21 24 – 3 x 1 = 21 21 x 1 = 21

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Quiz Answers (3 x 2) 2 x 4 ÷ 2 + 3 2 – 4 = 77 36 x 2 + 9 – 4 = 77 72 + 5 = 77 (12 + 2) – 12 ÷ 2 2 x 1 = 11 14 – 3 X 1 = 11 14 – 3 = 11

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Credits Graphics from: Microsoft Office Online Website from practice help: Math Goodies http://www.mathgoodies.com/lessons/vol7 /order_operations.html http://www.mathgoodies.com/lessons/vol7 /order_operations.html

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The End Thank you for looking at my PowerPoint lesson plan!

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