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## Order of Operations

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### P.E.M.D.A.S. is also know as the Order of Operations. Order of Operations is the order in which you perform mathematical operations to solve an expression. – PowerPoint PPT presentation

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Title: Order of Operations

1
Order of Operations
• (P.E.M.D.A.S)

2
P.E.M.D.A.S.
• Parenthesis ()
• Exponent 22
• Multiplication 6x8
• Division 93
• Addition 75
• Subtraction 10-4

3
What is P.E.M.D.A.S and why do we need it?
• P.E.M.D.A.S. is also know as the Order of
Operations.
• Order of Operations is the order in which you
perform mathematical operations to solve an
expression.
• We need P.E.M.D.A.S because it helps us solve
expressions properly and always the same way.
• Remember Calculate an expression in the wrong
order and you will get the wrong answer.

4
arenthesis ( )
• Used to group expressions
• Parenthesis can also be shown as brackets.
• or .
• An example of an expression with parenthesis is
• 6 (53)
• Choose the proper way to simplify the expression
• A. 6x5 30
• 30 3 33
• B. 53 8
• 8 x 6 48
• Answer

5
xponents 22
2
• 5 x 2
• Choose the proper way to simplify the expression
• A. 2 4
• 4x5 20
• B. 5 x 2 10
• 10 100
• Answer
• Used to multiply the same number repeatedly.
• Exponent tells how many times a base number is
multiplied to itself.
• 5 5x5x5 125
• An example of an expression using exponents is

2
3
2
6
ultiplication x
• Use the table on the right to help you.
• Multiplication is just a faster way to add.
• Choose the proper way to simplify the expression
• 2 5 x 3
• A. 5 x 3 15
• 15 2 17
• B. 2 5 7
• 7 x 3 21
• Answer

7
ivision
• Choose the correct way to simplify the
expression
• 12 4 2
• A. 4 2 6
• 12 6 2
• B. 12 4 3
• 3 2 5
• Answer
• Division is splitting a larger number into
smaller parts.
• Remember to check your division with
multiplication.
• An example of an expression with division in it
is

8
ddition
• It is tempting to want to solve addition first in
an expression.
• Remember only solve addition first if it is in
parenthesis.
• An example of an expression with addition in it
is
• Choose the proper way to simplify the equation
• (113 19) 81
• A. 113 19 132
• 132 81 213
• B. 19 81 100
• 100 113 213
• Answer A or B

9
ubtraction -
• 74 (12 - 4)
• The proper way to simplify this expression is
• A. 74 12 62
• 62 4 58
• B. 12 4 8
• 74 8 66
• Answer
• Subtraction is when you take away an equal or
smaller amount from a number.
• You can check your subtraction with addition.
• An example of an expression with subtraction in
it is

10
Review
The Order of Operations is P.E.M.D.A.S.
• arenthesis
• xponents
• ultiplication
• ivision
• ddition
• ubtraction

11
Practice
6x423
• 2423
• 123

Answer 15
12
Practice
• 15(6x2-9)
• 15(12-9)
• 15(3)
• Answer 5

13
Practice
(325)7
• (95)7
• 147

Answer 2
14
Practice
• 7(6x523)
• 7(6x253)
• 7(1503)
• 7(153)
• Answer 160

15
Practice
• (182)5
• 205

Answer 4
(3x62)5
16
Tips to Remember
An easy way to remember PEMDAS is
• lease xcuse
• y
• ear unt
• ally
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