One Step Equations Review

What is the inverse operation for addition?

• Addition
• Subtraction
• Multiplication
• Division

Solve for the variable.
x - 5 = 20

• x = -25
• x = -15
• x = 15
• x = 25

Write an equation to represent the problem given:
After paying $5.12 for a salad, Nora has $27.10. How much money did she have before buying the salad?

• n + $5.12 = $27.10
• n - $5.12 = $27.10
• n - $5.12 = -$27.10
• $5.12 - n = $27.10

Solve the word problem.
After paying $5.12 for a salad, Nora has $27.10. How much money did she have before buying the salad?
Use the equation:
n−5.12=27.10

• $32.22
• $22.02
• $21.98

Solve the algebraic equation for p.

p+8 = 12

• 4

• 20

• 1.5

• 96

r + 20 = 27

• r = 7
• r = 47
• r = 13
• r = 20

s - 22 = 50

• s = 28
• s = 20
• s = 72
• s = 75

g - 15 = 30

• g = 3(5)
• g = 15(3) 
• g = 15
• g = 7(5)

S + 18 = 24

• S = 42
• S = 3²
• S = 18
• S = 4 + 2 

Which choice models this situation? Marcus needs to sell 25 tickets to a fundraiser by Friday. So far, he has sold 9 tickets. How many tickets does he still need to sell?

• t - 9 = 25

• t + 9 = 25

• 9t = 25

• t/9 = 25