1. Bell Work
Begin copying the HW 1.1 on the board  Leaving space to show your work

2. Unit 1.1 Order of Operations
Monday
08/17/15
Unit 1.1 Order of Operations
Evaluate • 3 Is the answer 33 or 19? You can get 2 different answers depending on which operation you did first. We want everyone to get the same answer so we must follow the order of operations.
Why do we
do order of
operations?

3. Unit 1.1 Order of Operations
Monday
08/17/15
Unit 1.1 Order of Operations
“Please Excuse My Dear Aunt Sally” or PEMDAS.
ORDER OF OPERATIONS
1. Parentheses - ( ) or [ ]
Exponents
Multiply and Divide (from left to right)*
4. Add and Subtract (from left to right)*
*Important you work LR for MDAS
PEMDAS
What is
PEMDAS?

4. Unit 1.1 Order of Operations
Monday
08/17/15
Unit 1.1 Order of Operations
Once again, evaluate  3 and use the order of operations (Multiply.) 19 (Add.)

5. Unit 1.1 Order of Operations
Monday
08/17/15
Unit 1.1 Order of Operations
Remember, work LR: 14 ÷ 7 • • (Divide l/r.) (Multiply.) 1 (Subtract.)
Example #1

6. Unit 1.1 Order of Operations
Monday
08/17/15
Unit 1.1 Order of Operations
Remember, work LR: 3(3 + 7) 2 ÷ 5 3(10) 2 ÷ 5 (parentheses) 3(100) ÷ 5 (exponents) 300 ÷ 5 (multiplication) 60 (division)
Example #2

7. Unit 1.1 Order of Operations
Monday
08/17/15
Unit 1.1 Order of Operations
• (6 + 1) • • (7) • 4 (parentheses) • (7) • 4 (exponents) (7) • 4 (Multiply l/r.) (Multiply l/r.) (Subtract l/r.) (Add l/r.) 130 (Add.)
Example #3

8. Which of the following represents 112 + 18 - 33 · 5 in simplified form?
-3,236 4
107
16,996
Answer Now

9. Simplify (10 - 3) 2 -7 12 98
Answer Now

10. Simplify 24 – 6 · 4 ÷ 2 72 36 12
Answer Now

11. Unit 1.1 Order of Operations
Monday
08/17/15
Unit 1.1 Order of Operations
Solve equation … n + (13 - n)  5 for n = (13 - 8)  5 (Substitute.)  5 (parentheses) (Divide l/r.) 9 (Add l/r.)
Example #4

12. Unit 1.1 Order of Operations
Monday
08/17/15
Unit 1.1 Order of Operations
8y - 3x2 + 2n for x = 5, y = 2, n =3 8    3 (Substitute.) 8    3 (exponents)   3 (Multiply l/r.)  3 (Multiply l/r.) (Multiply l/r.) (Subtract l/r.) -53 (Add l/r.)
Example #5

13. What is the value of -10 – 4x if x = -13?
-62
-42 42 52
Answer Now

14. What is the value of 5k3 if k = -4?
-8000
-320
-60
320
Answer Now

15. What is the value of if n = -8, m = 4, and t = 2 ?10
-10 -6 6
Answer Now