Order of Operations

PEMDAS only works if....

• You add then subtract
• You 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

• Subtraction
• Division
• Multiplication
• Addition 

Which operation would you do first?
( 12 + 10) ÷ 10 · 14 - 6

• Division
• Multiplication
• Addition
• Subtraction

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

• 10
• 4
• 6
• 11

1 + 5 · 6

• 36
• 31
• 35
• 34

Which operation would you do first?
2 · (15 - 2) ÷ 5

• Addition
• Subtraction
• Multiplication
• Division

What does 3² mean?

• 3 x 2
• 3 x 3
• 2 x 2 x 2

2 + (9² - 4)

• 16
• 77
• 79

What step would I do second ? (4-2) x 9 + 7 =

• multiplication
• subtraction
• addition
• dividing

(15 ÷ 3)² + 9 ÷ 3

• 11.3
• 28
• 13