standard competition warmup

What is the inverse operation of subtraction?

• Subtraction
• Multiplication
• Division
• Addition

What is the inverse operation of division?

• Division
• Multiplication
• Addition
• Subtraction

When solving 234 + N =389, what operation would you use to find the answer

• multiplication
• addition
• subtraction
• division

Translate:
Five more than a number

• x + 5
• 5x
• 5 - x
• 5 divided by x

Solve for x:

• x = 20
• x = 7
• x = 10
• x = 3

x - 62 = 123
How should you show your work to isolate the variable and solve the equation?

• Add 62 to each side. 
• Subtract 62 from each side.
• Multiply each side by 62.
• Add 123 to each side.