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Predict the number of times an event happens

Grade 7 math · Fieldbook Learning

Name ______________________ Date __________

Multiply the probability by the number of trials.

  1. In 50 trials, heads came up 32 times. Using this result, how many times would you expect heads in 400 trials? (A number; it may be a decimal.)
  2. In 25 trials, a hit came up 7 times. Using this result, how many times would you expect a hit in 150 trials? (A number; it may be a decimal.)
  3. In 25 trials, a red spin came up 19 times. Using this result, how many times would you expect a red spin in 75 trials? (A number; it may be a decimal.)
  4. In 50 trials, a red spin came up 16 times. Using this result, how many times would you expect a red spin in 450 trials? (A number; it may be a decimal.)
  5. In 60 trials, a red spin came up 56 times. Using this result, how many times would you expect a red spin in 480 trials? (A number; it may be a decimal.)
  6. In 40 trials, a hit came up 1 times. Using this result, how many times would you expect a hit in 160 trials? (A number; it may be a decimal.)
  7. In 30 trials, heads came up 17 times. Using this result, how many times would you expect heads in 90 trials? (A number; it may be a decimal.)
  8. In 20 trials, a hit came up 12 times. Using this result, how many times would you expect a hit in 160 trials? (A number; it may be a decimal.)
  9. In 75 trials, heads came up 45 times. Using this result, how many times would you expect heads in 525 trials? (A number; it may be a decimal.)
  10. In 24 trials, a red spin came up 2 times. Using this result, how many times would you expect a red spin in 192 trials? (A number; it may be a decimal.)
  11. In 75 trials, a six came up 59 times. Using this result, how many times would you expect a six in 750 trials? (A number; it may be a decimal.)
  12. In 24 trials, heads came up 21 times. Using this result, how many times would you expect heads in 144 trials? (A number; it may be a decimal.)
  13. In 90 trials, a six came up 11 times. Using this result, how many times would you expect a six in 810 trials? (A number; it may be a decimal.)
  14. In 24 trials, heads came up 10 times. Using this result, how many times would you expect heads in 216 trials? (A number; it may be a decimal.)
  15. In 120 trials, a hit came up 1 times. Using this result, how many times would you expect a hit in 600 trials? (A number; it may be a decimal.)
  16. In 24 trials, a red spin came up 14 times. Using this result, how many times would you expect a red spin in 168 trials? (A number; it may be a decimal.)
  17. In 240 trials, a six came up 100 times. Using this result, how many times would you expect a six in 2160 trials? (A number; it may be a decimal.)
  18. In 48 trials, a red spin came up 41 times. Using this result, how many times would you expect a red spin in 144 trials? (A number; it may be a decimal.)
  19. In 48 trials, heads came up 39 times. Using this result, how many times would you expect heads in 336 trials? (A number; it may be a decimal.)
  20. In 180 trials, a red spin came up 115 times. Using this result, how many times would you expect a red spin in 1800 trials? (A number; it may be a decimal.)
More free practice: fieldbooklearning.com/practice/grade-7/predict-the-number-of-times-an-event-happens/

Answer key: Predict the number of times an event happens

  1. 256
  2. 42
  3. 57
  4. 144
  5. 448
  6. 4
  7. 51
  8. 96
  9. 315
  10. 16
  11. 590
  12. 126
  13. 99
  14. 90
  15. 5
  16. 98
  17. 900
  18. 123
  19. 273
  20. 1150