Order of Operations Tutorial

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Description
This tutorial for students in grades 5-7 to work with independently or with whole class instruction as the concept of Order of Operations is introduced or reviewed.

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Presentation Transcript

The Doctor is IN : The Doctor is IN Tutorial: Order of Operations START

Slide 2 : To aid you in working through this tutorial, you need to become familiar with the following: To go to the next slide, click To go back to the previous slide, click To quit, click To go to the first slide, click To go to the end of the tutorial, click

Lesson Overview : Lesson Overview Objectives: Use order of operations to evaluate numerical expressions. Why do we need to learn more about the order of operations? We need rules to follow in mathematics so that everyone works equations the same. Math is a universal language. Visit the following address to learn more: http://mathforum.org/library/drmath/view/58237.html

Can I take your ORDER please? : Can I take your ORDER please? When there is more than one operation to occur in the same expression, there is a particular order to follow when solving. Read each step: Perform operations inside parentheses. Simplify any exponents or square roots. Multiply and divide in order from left to right. Add and subtract in order from left to right.

Slide 5 : You can remember this order with the following device: P-E-M-D-A-S “Please Excuse My Dear Aunt Sally.” Parentheses Exponents Multiply Divide Add Subtract

Slide 6 : Following the steps: 5 + 5 x 5 – 5 ÷ 5 Ask yourself: Are there parentheses? No Are there exponents or square roots? No Is there any multiplication or division? Yes—so let’s get busy! 5 + 5 x 5 – 5 ÷ 5 5 + 25 – 5 ÷ 5 5 + 25 – 1 Now, add and subtract in order. 30 – 1= 29

Slide 7 : Let’s try another… 5² + 4 x 3 ÷ (2 – 1) – 3 Follow the steps for an example. 5² + 4 x 3 ÷ 1 – 3 25 + 4 x 3 ÷ 1 – 3 25 + 12 ÷ 1 – 3 37 – 3 34

REVIEW: : REVIEW: Remember, before you “operate”, you must think of these steps: P-e-m-d-a-s Parentheses Exponents Multiply Divide Add and subtract in order. Each expression is like a puzzle needing to be solved. You can do it!

Slide 9 : You will now work a quiz to see how well you understand the “order of operations”. For each expression, you will need pencil and paper to work through your problem. Make your selection by clicking the correct answer on the screen. Good Luck!

Problem 1: 6 + 6 x 6 – 6 ÷ 6 = : Problem 1: 6 + 6 x 6 – 6 ÷ 6 = B. 41 C. 11 D. 30 A. 2