Order of Operations (P.E.M.D.A.S) P.E.M.D.A.S. “ ”= Parenthesis “()” “ ”= Exponent “2...
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Transcript of Order of Operations (P.E.M.D.A.S) P.E.M.D.A.S. “ ”= Parenthesis “()” “ ”= Exponent “2...
Order of Operations
(P.E.M.D.A.S)
P.E.M.D.A.S.
• “ ”= Parenthesis “()”• “ ”= Exponent
“22”• “ ”= Multiplication “6x8”• “ ”= Division “9÷3”• “ ”= Addition
“7+5”• “ ”= Subtraction “10-4”
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 equation.
We need P.E.M.D.A.S because it helps us solve equations
properly and always the same way.
Remember: Calculate an equation in the wrong order and you will get the
wrong answer.
arenthesis “( )”• Used to group
equations.
• Parenthesis can also be shown as brackets.
”[ ] or { }”.
• An example of an equation with parenthesis is:
6 (5+3)• Choose the proper way to
solve the equation:
• A. 6x5 =30 30 + 3 = 33
• B. 5+3 =8 8 x 6 = 48
Answer:
xponents “22”• 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 equation using exponents is:
5 x 2 Choose the proper way to
solve the equation:
• A. 2 = 4 4x5 = 20
• B. 5 x 2 = 10
10 = 100
Answer:
2
2
2
3
ultiplication “x”• Use the table on the right
to help you.• Choose the proper way to
solve the equation:
•2 + 5 x 3
• A. 5 x 3 = 15 15 + 2 = 17
• B. 2 + 5 = 7 7 x 3 = 21
Answer:
ivision “÷”• Division is splitting
a larger number into smaller parts.
• An example of an equation with division in it is:
Choose the correct way to solve the equation:
12 4 + 2
• A. 4 + 2 = 6 12 6 = 2
• B. 12 4 = 3 3 + 2 = 5
Answer:
ddition “+”• It is tempting to want
to solve addition first in an equation.
• Remember: only solve addition first if it is in parenthesis.
• An example of an equation with addition in it is:
Choose the proper way to solve the equation
(113 + 19) + 81 =?
A. 113 + 19 = 132 132 + 81 = 213B. 19 + 81 = 100 100 + 113 = 213 Answer: A or
B
ubtraction ”-”.
• An example of an equation with subtraction in it is:
74 – (12 - 4)The proper way to solve
this equation is:
A. 74 – 12 = 62 62 – 4 = 58
B. 12 – 4 = 8 74 – 8 = 66
Answer:
Review arenthesis xponents
ultiplication ivision ddition ubtraction
The Order of Operations is:
P.E.M.D.A.S.
Practice6x4÷2+3=?
24÷2+3
12+3
Answer: 15
Practice15÷(6x2-9)=?
15÷(12-9)15÷(3)
Answer: 5
Practice(32+5)÷7=?
(9+5)÷7
14÷7
Answer: 2
Practice7+(6x52+3)=?
7+(6x25+3)7+(150+3)7+(153)
Answer: 160
Practice
(3x6+2)÷5=?
(18+2)÷5
20÷5
Answer: 4
Tips to Remember:
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ear unt
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An easy way to remember PEMDAS is: