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6.8 Order of Operations Computer Tutorial

6.8 Order of Operations Computer Tutorial. Practice and Class Work Grade. INTRODUCTION. If you are asked to simplify the expression "4 + 2×3", the question that naturally arises is "Which way do I do this? Because there are two options!": Choice 1:  Just do it straight across…WRONG!!!

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6.8 Order of Operations Computer Tutorial

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  1. 6.8Order of Operations Computer Tutorial Practice and Class Work Grade

  2. INTRODUCTION If you are asked to simplify the expression "4 + 2×3", the question that naturally arises is "Which way do I do this? Because there are two options!": Choice 1: Just do it straight across…WRONG!!! Choice 2:  Follow Order of operations YES!!!!

  3. Um…What’s that? it means the order in which you do each operation (+, -, ÷, • ) in an expression. The order is remembered by Please Excuse My Dear Aunt Sally

  4. Please Excuse My Dear Aunt Sally Parenthesis Exponents Multiplication Division (first come first serve) Addition Subtraction (first come first serve)

  5. Let’s Evaluate the Expression 4 + 2 x 3 Parenthesis? …………………………………………………………………………………………………… Exponents? …………………………………………………………………………………………………….. Multiplication /Division? Yes! Okay, solve those from left to right (first come first serve)…………………….................. Addition /Subtraction? Yes! Okay, solve those from left to right (first come first erve)…………………………………... Now, if you did it straight across like it is written it would be 4 + 2 = 6 x 3= 18…… But the Answer is NOT 18!!!! The answer is 10! Order Matters!!!! no no 4 + 6 10

  6. Let’s Evaluate the Expression 2  25 – (27-11) + 18 ÷ 2 Parenthesis? YES!…………………………………………………………………………………………… Exponents? YES!…………………………………………………………………………………………….. Multiplication /Division? Yes! Okay, solve those from left to right (first come first serve)…………………….................. Addition / Subtraction? Yes! Okay, solve those from left to right (first come first serve)…………………………………... 2  25 – 16 + 18 ÷ 2 2 32 – 16 + 18 ÷ 2 64 – 16 + 18 ÷ 2 64 – 16 + 9 48 + 9 57

  7. When you evaluate expressions, it is very important to set your paper up for the order of operations. Sometimes nothing is written in a space, sometimes many things are written in a space. Set up your paper like this with the Green PEMDAS. Then write the example on your paper as you click through each step to practice how it works. Each click does a new step. 3 + (8 x 4) + 30 ÷ 5 x 7 - 9 3 + 32 + 30 ÷ 5 x 7 - 9 P E MD AS 3 + 32 + 6 x 7 - 9 3 + 32 + 42 - 9 35 + 42 - 9 77 - 9 68

  8. Let’s visit some websites to see more! http://www.mrnussbaum.com/orderops.htm There is an error on the game problem- should be a negative number http://www.math-play.com/Order-of-Operations-Millionaire/order-of-operations-millionaire.html

  9. EXIT TICKET -Show all steps (graded) Name Date Evaluate the expression – remember to rewrite the expression after each step 5  23 – (27-21) + 10 P E MD AS

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