Writing One Step Equations

c - 18 = 24

• c = 42
• c = 6
• c = -6
• c = 1.3

Erin is four times as old as her brother William. If Erin is 20 years old, how old is William?

• 80 years old
• 16 years old
• 5 years old
• 24 years old

Write an equation to represent the problem:
Todd caught three times as many fish this year than last year. He caught 63 fish by the end of the year. Which algebraic equation represents how many fish he caught last year? 

• 3f = 63
• 63 - 3 = f
• 63/3 = f
• 3 + f = 63

What is the inverse operation of subtraction?

• Subtraction
• Multiplication
• Division
• Addition

What is the inverse operation of division?

• Division
• Multiplication
• Addition
• Subtraction

y - 4.6 = 12

• 16.6
• 5.8
• 7.4
• Answer not Given

Which equation has x = 5 as the solution?

• x + 15 = 10
• 2x = 5
• 2x = 10

What what is the inverse operation of subtraction?

• addition
• subtraction
• multiplication
• division

What equation matches this situation?
Robyn had some video games then bought 4 more.  Now she has a total of 10 games.

• v - 4 = 10
• v + 4 = 10
• 10 - 4 = v
• Answer not Given

In the equation
x + 7 = 12
7 is being added to the variable, x. How should you show your work to isolate the variable and solve the equation? 

• Subtract 7 from both sides. The solution is x = 5.
• Add 7 to both sides.
  The solution is x = 19.
• Multiply both sides by 7 The solution is x = 84.