Order of Operation

PEMDAS only works if....

• You add then subtract
• You subtract then add
• add or subtract right to left
• add or subtract left to right

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

(2 x 5) + 18

• 48
• 20
• 28

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

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

Tags

CCSS.7.NS.A.1D

What would be my first step? 3 + 4 x 6 - 4 =

• addition
• multiplication
• subtraction
• exponents

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

3 x 5 + 12 =

• 51

• 27

• 41

• 17

5 x (3 + 2) - 4 =

• 15

• 13

• 5

• 21

What is a numerical expression?

• A. A mathematical phrase that contains numbers and letters only.

• B. A mathematical phrase that contains numbers and operations.

• C. A mathematical word problem.

• D. A mathematical phrase that contains numbers, variables, in a word problem.

Tags

CCSS.6.EE.A.2B

Which operation would you do first in the following equation?

10 - 4 ÷ 1 x 5

• Subtraction

• Division

• Multiplication

• Addition

Which operation is performed SECOND?
44 ÷ 2 X (3 -1)

• muliplication X
• division ÷
• subtraction -

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

What step do you do after parenthesis? 
14 - 3 + (2 x 4) 

• 14 - 3 
• 3 + 8 
• 3 + 2 
• 2 x 4 

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2