Transcript Lesson 1.3 Orders of Operations ppt

Order of Operations
Lesson 1.3
Mr. Sparks & Mr. Beltz
 Red=
RECORD
Mr. Sparks’ Color Code
 Green= General Information
 [not necessary to record]


Blue = CHOOSE TWO
 [pick whichever two you want to record]
Purple= Primary Source/ Real Life Example
 Objective:
Order
of
Operations
equations.
 To learn and use the Order of Operations to solve
 Background Knowledge:
What are the four basic Operations in math?
 Addition
 Subtraction
 Multiplication
 Division
*Exponents
*Parenthesizes / Grouping
 When solving Orders of Operations you must follow these
steps:
Order of Operations
 1st Complete all operations in PARENTHESIZES
 2nd Complete all EXPONENTS
 3rd FROM left to right: MULTIPLICATION & DIVISION
 4th From left to right: ADDITION & SUBTRACTION
Easy Way to Remember
 PEMDAS
 Please Excuse My Dear Aunt Sally
Or
PE
M A
D S
------
Application
 4 (3+5) / 22 =
 What do we do first?
Guided Practice
 On Page 18, complete problems: #3-6
 *Show your work!
 *Be prepared to explain your answers to
the class.
Substituting Variables with the
Order of Operations
 What does it mean to substitute a variable?
[if your not sure think of what it means to substitute something
else, IE teachers, players on a team, etc.]
Solve the equation when X= 3
(X + 7) / 2
(3 + 7) / 2
(10) / 2 = 5
Guided Practice
 On Page 18, complete: # 11-13
 *Be prepared to show your work to the class.
HOME WORK
 Page 18 # 7-10 , 14-16 ,17-22