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Probability of the opposite event: percents

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. There is a 34% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  2. There is a 13% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  3. There is a 19% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  4. There is a 45% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  5. There is a 28% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  6. There is a 76% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  7. There is a 65% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  8. There is a 59% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  9. There is a 75% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  10. There is a 84% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  11. There is a 38% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  12. There is a 16% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  13. There is a 30% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  14. There is a 2% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  15. There is a 83% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  16. There is a 31% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  17. There is a 60% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  18. There is a 71% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  19. There is a 70% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
  20. There is a 72% chance of rain tomorrow. What is the chance that it does not rain? Write the percent only.
More free practice: fieldbooklearning.com/uk/practice/year-8/probability-of-the-opposite-event-percents/

Play it as a quiz game

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

  1. Download the game's own question template: in Kahoot, Add question → Import spreadsheet; in Blooket, Create a set → Spreadsheet import.
  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: percents

  1. 66
  2. 87
  3. 81
  4. 55
  5. 72
  6. 24
  7. 35
  8. 41
  9. 25
  10. 16
  11. 62
  12. 84
  13. 70
  14. 98
  15. 17
  16. 69
  17. 40
  18. 29
  19. 30
  20. 28