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

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.

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

What does order of operations mean? 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. Don’t forget to solve the problem from left to right!

P l e a s E x c u s e M y D e a r A u n t S a l y

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

Exponents The second step of the order of operations is exponents. á 52 = 25 Ex. 3 + (3 + 2)2 = 28 á 3 + 25 = 28

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

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

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

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

Practice Copy the following problems into your notebook and practice them. (3 + 5) – 2 = 3 + 8 ÷ 4 + 12 = 28 – 32 x 2 = (3 + 5)2 – 2 = Answers

Practice Copy the following problems into your notebook and practice them. 42 + (2 x 5) x 3 – 6 ÷ 2 = (3 x 2)2 ÷ 5 – 3 + 4 = Answers

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

Quiz Copy the following problems on a piece of paper and hand them in when you are done. 12 x 2 – 4 x 6 = (12 + 2) – 12 ÷ 22 x 1 = Answer

Quiz Copy the following problems on a piece of paper and hand them in when you are done. (3 x 2)2 x 4 ÷ 2 + 32 – 4 = (12 + 2) – 12 ÷ 22 x 1 = Answer

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

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