Writing & Solving Equations

To solve equations we use the order of operations (P.E.M.D.A.S.) in ____________ .

• order. So, parentheses come first, then multiplication and division, and last addition and subtraction. 

• reverse. So, addition and subtraction come first, then multiplication and division, and last parentheses. 

When solving algebraic equations, to undo multiplication we use ______________ .

• multiplication

• subtraction

• addition

• division

Solve the following equation:
 $40+4n=164$  

•  $n=31$  

•  $n=4$  

•  $n=51$  

When solving algebraic equations, to undo addition we use ______________ .

• division

• subtraction

• addition

• multiplication

Determine the unknown and define the variable of the question below:

It costs $14 to attend the South Florida Fair. Wristbands for the amusement park rides cost $2 each. How many wristbands can you buy at the fair if you have $30 to spend?

• the number of people attending the fair; p = people

• the number of rides at the fair; r = rides

• the number of wristbands you can buy; w = wristbands

When solving algebraic equations, to undo division we use ______________ .

• subtraction

• addition

• multiplication

• division

To solve algebraic equations we use ____________ operations.

• inverse/opposite

• correct

• math

• the order of

When solving algebraic equations, to undo subtraction we use ______________ .

• subtraction

• division

• addition

• multiplication

Choose the equation that represents the equation below:

Jason spent $25 on a movie ticket and some candy bars. If the movie ticket cost $7 and each candy bar cost $3, then how many candy bars did she buy?

• $7c-3=25$

• $7+3c=25$

• $7c+3=25$

• $7-3c=25$

Solve the following algebraic equation:
 $1350\ =\ 25x+50$  

•  $x=56$  

•  $x=52$  

•  $x=26.5$