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# 1.4 Order of Operations

The 8 Steps To Evaluate An Expression With More Than One Operation
by

## Danielle Boucher

on 28 September 2017

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#### Transcript of 1.4 Order of Operations

The 8 Steps To Evaluate An Expression With More Than One Operation
Mrs. Meaney
2017-2018
Step 1
Write down PEMDAS.
Step 2
Rewrite the expression to be evaluated.
P
E
MD
AS
(24 - 27)² - 45 ÷ 5 x (-3)
Step 3
Substitute values for variables, if necessary.
Step 4
Ask yourself, "Are there any
parentheses
( )
, brackets
[ ]
, absolute value signs
||
, or fraction bars?"
If yes, evaluate the expression in the parentheses.
Evaluate the expression in the parentheses.
If no, continue.
Step 5
P
E
MD
AS
Ask yourself, "Are there any
exponents (powers or roots)?"
If yes, evaluate the power.
If no, continue.
Evaluate the power.
P
E
MD
AS
(-3)²
- 45 ÷ 5 x (-3)
9 - 45 ÷ 5 x (-3)
Step 6
Ask yourself, "are there any multiplication or division operations?"
If yes, evaluate from left to right.
If no, continue.
Divide!
9 - 9
x
(-3)
P
E
MD
AS
Multiply!
9 - (-27)
Step 7
Ask yourself, "Are there any addition or subtraction operations?"
If yes, evaluate from left to right.
If no, continue.
Subtract!
P
E
MD
AS
9
-
(-27)
36
Step 8
Check your answer! Make sure it makes sense.
Order Of Operations Song
ORDER OF OPERATIONS
ORDER Of Operations Prezi
Sally is proud!
Sally
We will use Ms. Meaney's 8 Steps to help you!!!
Sally
(24 - 27)² - 45 ÷ 5 x (-3)
(24 - 27)² - 45 ÷ 5 x (-3)
(-3)² - 45 ÷ 5 x (-3)
9 - 45
÷
5 x (-3)
9 - 9 x (-3)
(24 - 27)² - 45 ÷ 5 x (-3)
(-3)² - 45 ÷ 5 x (-3)

9 - 45 ÷ 5 x (-3)
:

Evaluate the expression when
a = 4 , b = -6, and c = -12.

(-3)² - 45 ÷ 5 x (-3)
(24 - 27)² - 45 ÷ 5 x (-3)
(24 - 27)² - 45 ÷ 5 x (-3)
(24 - 27)² - 45 ÷ 5 x (-3)
(-3)² - 45 ÷ 5 x (-3)
9 - 45 ÷ 5 x (-3)
9 - (-27)
9 + 27
Full transcript