Order of Operations and Simplifying Expressions

Simplify the expression  $2x-6-2$  

•  $-6x$  

•  $2x-4$  

•  $2x-8$  

•  $-2x$  

Simplify the expression  $4x+3-6x-2x-1$  

•  $-2x$  

•  $2$  

•  $-4x+2$  

•  $-1x$  

What is the correct order of operations when simplifying expressions.

(read the answers carefully)

• Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

• Parentheses, Exponents, Multiplication or Division, Addition or Subtraction

• Parentheses, Multiplication, Division, Addition, Subtraction

• Parentheses, Exponents, Multiplication, Addition, Division, Subtraction

Simplify the expression  $5-x-3x$  

•  $1x$  

•  $5+-2x$  

•  $2$  

•  $5+-4x$  

To simplify the expression  $7-x+1+3x$  _____________.

• You can't unless you know what x is.

• Combine like terms;  $7+1$   and  $-x+3x$  

• Do order of operations from left to right;  $7-x=6x$  , then  $6x+1=7x$  , and so on.

• Just smile and nod while your partner does it

Which is NOT equivalent to the expression  $-2\left(x-3\right)+6-x$ ? 

•  $-2\left(x+-3\right)+6+-x$  

•  $-2x+-6+6+-x$  

•  $-2x+12-x$  

•  $12+-3x$  

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

Simplify the expression  $3-2\left(2x+1\right)+4x$  

• 0

• 5

• 1

• Cannot simplify because 3 and 4x are not like terms.

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

• addition

• multiplication

• subtraction

• exponents

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

• multiplication

• subtraction

• addition

• dividing