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20 questions and an answer page, sized for A4.

Substitute with squares

Year 8 · Patterns & Algebra · 20 questions

Name
Date
  1. 1.
    If x = 1, what is the value of 5x − 9?
  2. 2.
    If x = 1, what is the value of 5x − 2?
  3. 3.
    If x = 3, what is the value of 7x + 8?
  4. 4.
    If x = -5, what is the value of x² + 2x?
  5. 5.
    If x = 6, what is the value of x² + 5x?
  6. 6.
    If x = 8, what is the value of 7x − 3?
  7. 7.
    If x = -1, what is the value of x² + 6x?
  8. 8.
    If x = -1, what is the value of 6x + 4?
  9. 9.
    If x = 3, what is the value of 3x + 5?
  10. 10.
    If x = 5, what is the value of 6x + 5?
  11. 11.
    If x = 6, what is the value of x² + 3x?
  12. 12.
    If x = -5, what is the value of 2x − 5?
  13. 13.
    If x = 3, what is the value of 4x − 4?
  14. 14.
    If x = 2, what is the value of 7x − 1?
  15. 15.
    If x = 7, what is the value of x² + 6x?
  16. 16.
    If x = 8, what is the value of x² + 3x?
  17. 17.
    If x = -6, what is the value of x² + 3x?
  18. 18.
    If x = 9, what is the value of x² + 4x?
  19. 19.
    If x = 3, what is the value of 4x − 8?
  20. 20.
    If x = -4, what is the value of x² + 7x?

Free maths worksheets and practice: rocketdigits.com/learn/substitute-with-squares

Answers: Substitute with squares

  1. -4
  2. 3
  3. 29
  4. 15
  5. 66
  6. 53
  7. -5
  8. -2
  9. 14
  10. 35
  11. 54
  12. -15
  13. 8
  14. 13
  15. 91
  16. 88
  17. 18
  18. 117
  19. 4
  20. -12

Free maths worksheets and practice: rocketdigits.com/learn/substitute-with-squares

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