Order of Operations Review

What is PEMDAS?

• Percent, Exponent, Multiplication, Division, Addition, Subtraction

• Parenthesis, Exponent, Multiplication, Division, Addition, Subtraction

• Parenthesis, Equals, Multiplication, Division, Addition, Subtraction

• Percent, Equals, Multiplication, Division, Addition, Subtraction

How can you remember "Order of Operations"?

• Please Excuse Dear Aunt Mary

• Please Don't Excuse My Aunt

• Please Excuse My Dear Aunt Sally

• Excuse My Dear Aunt Sally Please

PEMDAS only works if you ______.

• add then subtract

• subtract then add

• add or subtract right to left

• add or subtract left to right

Which operation would you do FIRST in the following equation?

10 - 4 ÷ 1 · 5

• 10 - 4

• 4 ÷ 1

• 1 x 5

• 1 + 5

What would your SECOND step be if simplifying this problem?

( 10 + 10) ÷ 10 · 14 - 6

• 12 + 10

• 10 x 14

• 20 ÷ 10

• 14 - 6

Evaluate the equation:
5 · 2 - (11 - 7)

• 10
• 4
• 6
• 11

Which operation would you do first?
10 - ( 9 + 3 ) ÷ 2

• Subtraction
• Addition
• Division
• Multiplication

Evaluate the equation:
(3 ∙ 18) ÷ (2 ∙ 9)

• 3
• 54
• 243

(10 + 2) ×10-3

• 84

• 27

• 117

• 53

Find and explain the error.

5 - 3 + 2

5 - 5

0

• There is no error.

• Addition was done first and you should have subtracted first

• There is a subtraction error