Transcript Order of Operations

How can we find the value of a multiple
step numerical expression?
For example, what would the value of this
numerical expression be?
5 + (3 x 2)- 42 _ 8
In this lesson you will learn how
to find the value of a numerical
expression which contains wholenumber exponents by using the
Order of Operations.
Let’s
Review
Let’s
Review
Numerical expressions are mathematical
phrases that have numbers and operations
but do not contain an equal or inequality
sign.
Let’s
Review
Let’s
Review
Exponents show how many times we use the
base number as a factor.
For instance:
52 is the same as 5 x 5 or 25.
A Common
Mistake
Let’s
Review
Ignoring the Order of Operations and just
performing operations as they appear left to
right.
42 + 8 ÷ 4 ≠ 6
CoreReview
Lesson
Let’s
Order of Operations
1st P Parentheses
2nd E Exponents
3rd M Multiply or
D Divide from left to right
4th A Add or
S Subtract from left to right
CoreReview
Lesson
Let’s
P
E
M
D
A
S
5 + (3 x 2)- 42 ÷ 8
5 + 6 - 42 ÷ 8
5 + 6- 16 ÷ 8
5 + 6- 2
11 - 2
9
CoreReview
Lesson
Let’s
A good way to remember the order of the
Order of Operations:
Please Excuse My Dear Aunt Sally
In this lesson you have learned
how to evaluate multiple step
numerical expressions by
following the Order of
Operations.
Guided
Practice
Let’s
Review
Find the value of:
30 – 22 + (2 x 5) + 6
Extension
Let’s
ReviewActivities
Use the Order of Operations to find the value of:
53 – 102 + 20(8-3)
Extension
Let’s
ReviewActivities
Write the expression and find it’s value by following
the Order of Operations
Eight less than two cubed, plus twenty divided by
five
Quick
Quiz
Let’s
Review
Find the value of
43 _ (7 + 5)
Find the value of
25 - 7 _ 32