Order of Operations

EXTRA

Refocusing Room

This session will be recorded for learning purposes This session will be recorded for learning purposes.  Learning purposes include: a lesson review for students who are absent, students who want to review for a test, etc. Mrs. Michele Salego Mrs. Jennifer Owens  

What are we learning today? Agenda: 1.Order of Operations Review 2. Brackets and Braces Practice South Carolina Math Standards 5.ATO.1 I can use the order of operations to help me solve multi-step mathematical problems using addition, subtraction, multiplication, and division, and variables

Which statement best describes you? Assess Yourself! Which statement best describes you? A C B D

The Order of Operations tells us how to do a math problem with more than one operation, in the correct order.

Please Excuse My Dear Aunt Sally This will help to you to remember the order of operations.

Please Excuse My Dear Aunt Sally Parentheses ( ) E Exponents 43 M D Multiply x Divide ÷ A S Add + Subtract -

Small Group Practice 4 x 6 + 1 – ( 2 x 5) 10 + 2 x (9 – 6 )

https://safeYouTube.net/w/L8Fh

Play a Game! http://mrnussbaum.com/orderops/ http://www.math-play.com/Order-of-Operations- Millionaire/division-millionaire.html http://www.mathplayground.com/mathman.html

First let’s review: Order of Operations P-Parentheses- This also includes braces and brackets. E-Exponents M/D-Multiply or divide depending on what comes first from left to right. A/S-Add or subtract depending on what comes first from left to right. PEMDAS or Please Excuse My Dear Aunt Sally StudyJams

Take out your white board. Let’s practice: Take out your white board. 1. 4 – 9 ÷ 3 -1 = 1 2. 2 + ( 3 X 6 ) +10= 30 3. 18 - 3 ÷ 3 + (63 ÷ 3) – 6 = 32

. Examples: (26 + 18) ÷ 4 { [2 X (3+5)] - 9} + [5 x (23-18)] Answers: 11 32 11.2 Circle the operation you would do first in red. 1. 24 x ( 3 + 6) -16 2. [ 36 + (2 x 5)] ÷ 2 3. 2 + 6 ÷ 2 x 4

Word problems A teacher has to buy supplies for her class. She buys each of her 24 students a box of crayons for $0.50 each, a pair of scissors for $1.50, and a spiral notebook for $0.25. How much does it cost for her to buy all of these items? Use one expression to solve. Answers 24 x [ 0.25 + (0.50 + 1.50)] 24 x [ 0.25 + 2.00] 24 x 2.25 = $54.00

Notes on Order of Operations Parentheses:__________________________________ Exponents ____________________________________ Multiply/Divide _________________________________ Add/Subtract __________________________________

PEMDAS 3+23- (9+1) 3+23- 10 3+8-10 11-10 1

PEMDAS 3 (9+1) + 62 3(10)+62 3(10)+36 30+36 66

PEMDAS 4+5 x (6-2) 4+5 x 4 4+20 24

PEMDAS 4+ 10 x 23 -16 4+10 x 8 -16 4+ 80 -16 84-16 68

PEMDAS 21 + 102 ÷ 10 21+100÷10 21 + 10 31

PEMDAS 10+72-2 x 5 10+49–2 x 5 10+49- 10 59 - 10 49

PEMDAS 64 ÷ (9 x 3-19) 64÷(27 –19) 64 ÷ 8 8

Have fun doing the Order of ☺ Operations!

Let’s Try Together

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