Unit 1.C Classwork: Order of Operations/Eval. Expressions

What are the correct steps to solve the following expression?
50 − 16 ÷ 2

• add, multiply
• subtract, divide
• divide, subtract
• subtract, multiply

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 is the value of the expression when a=3? 
2(3a - 2)

• 14
• 8
• 62
• 231

Tags

CCSS.6.EE.A.2C

What is the value of the expression if
a = 4, b = 2
-3a + 2b

• -8
• 8
• 16
• -16

Tags

CCSS.6.EE.A.2C

The M and D in PEMDAS stand for Multiplication and Division.

Which operation do you do first?

• Multiplication

• Division

• Whichever comes first in the expression as you read it from left to right

Tags

CCSS.7.NS.A.3

The A and S in PEMDAS stand for Addition and Subtraction.

Which operation do you do first?

• Addition

• Subtraction

• Whichever comes first in the expression as you read it from left to right

Tags

CCSS.7.NS.A.3

Evaluate the expression for the given value of the variable:
 $\left(r+1\right)^2$   for  $r=-8$  

Tags

CCSS.6.EE.A.2C

Evaluate the expression for the given values of the variables:
 $4x-3y$   for  $x=5$  and  $y=2$  

Tags

CCSS.6.EE.A.2C

 $Evaluate\ 9-\left(\frac{8}{a}+3\right)\ for\ a\ =2$  

• 2

• 8

•  $7\frac{2}{5}$  

• -4

Tags

CCSS.6.EE.A.2C

 $Evaluate\ 4c\ +\sqrt{4d\ +5}\ for\ c=2\ and\ d=1$  

• 17

• 11

• 89

• 12.2