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Order of Operations

Understanding the Order of Operations
by

Lauralee Welch

on 3 December 2013

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Transcript of Order of Operations

The Order of Operations tells us how to solve an expression.


It tells us what to look for and what to solve first.
What is the Order of Operations?
P=

parentheses
E=

exponents
MD=
multiply and divide (
left to right
)
AS=

add and subtract (
left to right
)
What is the order?
Example 2


Step 1: Solve what's in the parentheses.
7 x
9

Step 2: Multiply.
63
Example 1
Try this one on your own. List your steps!
Do you think you understand?
Discovering the Order of Operations
Solve the expression
7 x (10-1).
1st step
Finished
2nd step
Spark
Last step
Multiply 4 x -3
Divide -12 by 6.
Third Step
Divide 8 by 4.
Add -2 + 2
Answer: 0
55 ÷ 11 + (5 + 2)(3)
Don't forget to follow
P
E
MD
AS
NOTE:
We must
rewrite
the expression after solving each operation. This is VERY IMPORTANT!!!

Ex: (5-4) x 3

1
x 3

3
-12

÷ 6 + 8 ÷ 4
-2

+ 8 ÷ 4
-2 +

2
(4)(-3) ÷ 6 + 8 ÷ 4
Full transcript