Order of Operations

What is the first operation you need to perform in the problem shown?

• addition
• subtraction
• parenthesis
• exponents

• 80

• 14

• 50

• 88

Solve the following:
(2 + 7 - 1) ÷ 2²

• 16
• 2
• 72.25
• 8.75

True or false:
Addition ALWAYS comes before subtraction.

• True
• False

Solve the following:
-2 x (3 + 8 ÷ 4)²

• -16
• 1.375
• 4
• -50

Simplify:
[25-(13+4)+4] ÷ 3

• 6
• 2
• 3
• 4

• Sallie

• Brian

• I'm not sure

• Both

90 - 5² × 3

• 15
• 240
• 195

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

(15 ÷ 3)² + 9 ÷ 3

• 11.3
• 28
• 13