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Probability of the opposite event: decimals

Year 8 maths · Fieldbook Learning

Name ______________________ Date __________

The probability of an event and the probability that it does not happen add up to 1 (or 100%).

  1. The probability that it rains tomorrow is 0.6. What is the probability that it does not rain? Write a decimal.
  2. The probability that it rains tomorrow is 0.35. What is the probability that it does not rain? Write a decimal.
  3. The probability that it rains tomorrow is 0.28. What is the probability that it does not rain? Write a decimal.
  4. The probability that it rains tomorrow is 0.12. What is the probability that it does not rain? Write a decimal.
  5. The probability that it rains tomorrow is 0.29. What is the probability that it does not rain? Write a decimal.
  6. The probability that it rains tomorrow is 0.66. What is the probability that it does not rain? Write a decimal.
  7. The probability that it rains tomorrow is 0.27. What is the probability that it does not rain? Write a decimal.
  8. The probability that it rains tomorrow is 0.43. What is the probability that it does not rain? Write a decimal.
  9. The probability that it rains tomorrow is 0.39. What is the probability that it does not rain? Write a decimal.
  10. The probability that it rains tomorrow is 0.9. What is the probability that it does not rain? Write a decimal.
  11. The probability that it rains tomorrow is 0.83. What is the probability that it does not rain? Write a decimal.
  12. The probability that it rains tomorrow is 0.62. What is the probability that it does not rain? Write a decimal.
  13. The probability that it rains tomorrow is 0.05. What is the probability that it does not rain? Write a decimal.
  14. The probability that it rains tomorrow is 0.31. What is the probability that it does not rain? Write a decimal.
  15. The probability that it rains tomorrow is 0.4. What is the probability that it does not rain? Write a decimal.
  16. The probability that it rains tomorrow is 0.25. What is the probability that it does not rain? Write a decimal.
  17. The probability that it rains tomorrow is 0.13. What is the probability that it does not rain? Write a decimal.
  18. The probability that it rains tomorrow is 0.67. What is the probability that it does not rain? Write a decimal.
  19. The probability that it rains tomorrow is 0.61. What is the probability that it does not rain? Write a decimal.
  20. The probability that it rains tomorrow is 0.97. What is the probability that it does not rain? Write a decimal.
More free practice: fieldbooklearning.com/uk/practice/year-8/probability-of-the-opposite-event-decimals/

Play it as a quiz game

20 of these questions as multiple choice, with near-miss wrong answers, ready for Kahoot or Blooket.

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  2. Click the matching button below, then click the first empty question row of the template and paste.
  3. Save the template (Kahoot needs .xlsx, Blooket .csv) and upload it.
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Answer key: Probability of the opposite event: decimals

  1. 0.4
  2. 0.65
  3. 0.72
  4. 0.88
  5. 0.71
  6. 0.34
  7. 0.73
  8. 0.57
  9. 0.61
  10. 0.1
  11. 0.17
  12. 0.38
  13. 0.95
  14. 0.69
  15. 0.6
  16. 0.75
  17. 0.87
  18. 0.33
  19. 0.39
  20. 0.03