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Substitution Worksheet

Use Substitution and the Order of Operations to simplify each problem. Let a = 5, b = -2, x = p + 1, and y = q2.

Checking Your Answers

Click "Show Answer" underneath the problem to see the answer. Or click the "Show Answers" button at the bottom of the page to see all the answers at once.

Example:

Equation: b + x2 
Answer: p^2 - 2p - 1

Quiz:

  1. Equation: 5a + 3 
  2. Equation: 2a / b 
  3. Equation: b2 + a2 
  4. Equation: b3 
  5. Equation: 10b2 
  6. Equation: 5x 
    Answer: 5p + 5
  7. Equation: -ax 
    Answer: -5p - 5
  8. Equation: x2 
    Answer: p^2 + 2p + 1
  9. Equation: ab2 
  10. Equation: a3x 
    Answer: 125p + 125
  11. Equation: xy 
    Answer: pq^2 + q^2
  12. Equation: a + xy / q + a - 5 
    Answer: 5 + pq + q
  13. Equation: a(b + 1) - a + ab 
    Answer: -20
  14. Equation: (a + b)2 
  15. Equation: a(a + x) 
    Answer: 30 + 5p
  16. Equation: y2 - q4 
  17. Equation: abx2 
    Answer: -10p^2 - 20p - 10
  18. Equation: 2x2 - 2(p2 + 1) 
  19. Equation: a + b - 5 
  20. Equation: mx - p(m - 1) 
    Answer: m + p
Show all answers

Related Pages

Substitution Introduction Lesson
Introduction to substituting variables in an expression with numbers or other expressions.

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