← Back to Year 8 worksheets

These worksheets are free forever. Want lessons that adapt to your child as they learn, plus progress tracking? Try Ignition Learning free.

Sign up free

Ignition Learning — Activity Sheet

Theoretical probability

Mathematics · Year 8

Name: ______________________Date: ____________

Theoretical probability builds confident Year 8 mathematical reasoning. Work from the information given, choose a suitable method, show each step and check that the answer is sensible.

Example

A worked theoretical probability example should show the method clearly before giving a final answer.

Key terms

Method:
A planned set of mathematical steps.
Reasoning:
Explaining why a method is suitable.
Check:
Testing whether an answer is sensible.

Questions

  1. 1. Theoretical probability: check 1 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  2. 2. Theoretical probability: check 2 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  3. 3. Theoretical probability: check 3 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  4. 4. Theoretical probability: check 4 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  5. 5. Theoretical probability: check 5 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  6. 6. Theoretical probability: check 6 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  7. 7. Theoretical probability: check 7 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  8. 8. Theoretical probability: check 8 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  9. 9. Theoretical probability: check 9 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  10. 10. Theoretical probability: check 10 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  11. 11. Theoretical probability: check 11 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  12. 12. Theoretical probability: check 12 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  13. 13. Theoretical probability: check 13 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  14. 14. Theoretical probability: check 14 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  15. 15. Theoretical probability: check 15 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  16. 16. Theoretical probability: check 16 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  17. 17. Theoretical probability: check 17 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  18. 18. Theoretical probability: check 18 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  19. 19. Theoretical probability: check 19 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  20. 20. Theoretical probability: check 20 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

  21. 21. Theoretical probability: check 21 — which approach shows clear mathematical reasoning?

    • Identify the information, choose a method, calculate carefully and check the result
    • Guess an answer without working
    • Ignore units and conditions
    • Use an unrelated rule

Answer key (parent copy)

  1. 1. Identify the information, choose a method, calculate carefully and check the result
  2. 2. Identify the information, choose a method, calculate carefully and check the result
  3. 3. Identify the information, choose a method, calculate carefully and check the result
  4. 4. Identify the information, choose a method, calculate carefully and check the result
  5. 5. Identify the information, choose a method, calculate carefully and check the result
  6. 6. Identify the information, choose a method, calculate carefully and check the result
  7. 7. Identify the information, choose a method, calculate carefully and check the result
  8. 8. Identify the information, choose a method, calculate carefully and check the result
  9. 9. Identify the information, choose a method, calculate carefully and check the result
  10. 10. Identify the information, choose a method, calculate carefully and check the result
  11. 11. Identify the information, choose a method, calculate carefully and check the result
  12. 12. Identify the information, choose a method, calculate carefully and check the result
  13. 13. Identify the information, choose a method, calculate carefully and check the result
  14. 14. Identify the information, choose a method, calculate carefully and check the result
  15. 15. Identify the information, choose a method, calculate carefully and check the result
  16. 16. Identify the information, choose a method, calculate carefully and check the result
  17. 17. Identify the information, choose a method, calculate carefully and check the result
  18. 18. Identify the information, choose a method, calculate carefully and check the result
  19. 19. Identify the information, choose a method, calculate carefully and check the result
  20. 20. Identify the information, choose a method, calculate carefully and check the result
  21. 21. Identify the information, choose a method, calculate carefully and check the result