Unit 1. Day 1.

Normal Math Class (49 minutes) Quiz [Have homework on desk. I check HW] (10 min) Quiz answers (5 min) Review Homework: ASK QUESTIONS (4 min) Lesson (30 min)

Topic: Order of Operations EQ: What is the order I follow when doing math? Please get out paper for today’s lesson Name Date Period

When I was in 7 th grade… What do you think my answer was? I put 14 as my answer. But my teacher told me I was wrong, which made me mad! He said the answer was 11 … why?

Order of Operations From now on, you must always follow a particular order when making math computations. We simplify the inside of Compute the Multiply and Divide (from left to right) Add and Subtract (from left to right) Parentheses Exponents

Order of Operations Multiply and Divide (from left to right) Add and Subtract (from left to right) Parentheses or [ ] Exponents P E MD A S Not exactly accurate!

Order of Operations Multiply and Divide (from left to right) Add and Subtract (from left to right) Parentheses or [ ] Exponents P E MD A S

Example A: Find the value of the expression 19 P E M A D S

Example B*: Find the value of the expression 25 P E M A D S

Example C: Find the value of the expression P E M A D S

Example D*: Find the value of the expression P E M A D S

Pair Up

Order of Operations P E M A D S 1) = 1 2) = 2 3) = 3 4) = 4 5) = 5 1) = 6 2) = 7 3) = 8 4) = 9 Use the order of operations and the symbols ( )   + - to create a true statement.

Name Date Period Order of Operations Ex A: 19 Ex B: 25

Ex C: Ex D: Summary: Today we reviewed the order of operations. I must use PEMDAS any time I am performing multiple operations. I must remember that division can come before multiplication if it is on the left. Subtraction can also come before addition if it is on the left.

Today’s Assignment: Get syllabus signed Lascaux Cave Paintings (ca. 15,000 B.C.)

Please get out the assignment from last class. Please get out your notes from yesterday. Please complete the quiz, and write your answers in the answer box