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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 54 · 40 questions
TalentJR

Creator's tip (Add the clips): Video length = the clips added up. Minutes → seconds: × 60, then add the extra seconds. Seconds → minutes: take away 60 as many times as it fits. Still needed = target − what you have; 2× speed halves the time, half speed doubles it.

NameDateTime takenScore ___ / 40
  1. 1.⏱️ An 84-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  2. 2.⏱️ A video is 165 seconds long. How long is that in minutes and seconds? (a) 2 min 15 s (b) 1 min 65 s (c) 2 min 45 s (d) 3 min 45 s
  3. 3.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) twice as long (c) silent (d) the same length
  4. 4.⏱️ An 80-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  5. 5.⏱️ How many seconds are in 1 minute? (a) 60 (b) 100 (c) 10 (d) 30
  6. 6.⏱️ A 78-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  7. 7.⏱️ A video has three clips of 5, 20 and 30 seconds. How long is the video (in seconds)?
  8. 8.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  9. 9.⏱️ Your video must be 90 seconds long. Your clips add up to 56 seconds. How many more seconds of video do you need?
  10. 10.⏱️ A 27-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  11. 11.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  12. 12.⏱️ A video is 280 seconds long. How long is that in minutes and seconds? (a) 4 min 40 s (b) 4 min 10 s (c) 2 min 80 s (d) 5 min 40 s
  13. 13.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  14. 14.⏱️ A video is 350 seconds long. How long is that in minutes and seconds? (a) 6 min 50 s (b) 5 min 50 s (c) 5 min 20 s (d) 3 min 50 s
  15. 15.⏱️ A video is 550 seconds long. How long is that in minutes and seconds? (a) 5 min 50 s (b) 10 min 10 s (c) 9 min 10 s (d) 9 min 40 s
  16. 16.⏱️ An 11-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  17. 17.⏱️ A video is 60 seconds long. How long is that in minutes and seconds? (a) 2 min 0 s (b) 1 min 30 s (c) 1 min 0 s (d) 3 min 0 s
  18. 18.⏱️ How many seconds is 3 minutes 47 seconds?
  19. 19.⏱️ How many seconds is 2 minutes 24 seconds?
  20. 20.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  21. 21.⏱️ How many seconds is 9 minutes 23 seconds?
  22. 22.⏱️ A 52-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  23. 23.⏱️ A video has three clips of 31, 34 and 7 seconds. How long is the video (in seconds)?
  24. 24.⏱️ How many seconds is 7 minutes 12 seconds?
  25. 25.⏱️ A video is 570 seconds long. How long is that in minutes and seconds? (a) 9 min 30 s (b) 9 min 0 s (c) 10 min 30 s (d) 5 min 70 s
  26. 26.⏱️ How many seconds is 7 minutes 53 seconds?
  27. 27.⏱️ A video has three clips of 6, 54 and 29 seconds. How long is the video (in seconds)?
  28. 28.⏱️ How many seconds is 4 minutes 29 seconds?
  29. 29.⏱️ A 72-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  30. 30.⏱️ A 160-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  31. 31.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  32. 32.⏱️ Your video must be 120 seconds long. Your clips add up to 89 seconds. How many more seconds of video do you need?
  33. 33.⏱️ A 120-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  34. 34.⏱️ How many seconds is 3 minutes 43 seconds?
  35. 35.⏱️ Your video must be 90 seconds long. Your clips add up to 34 seconds. How many more seconds of video do you need?
  36. 36.⏱️ Your video must be 60 seconds long. Your clips add up to 50 seconds. How many more seconds of video do you need?
  37. 37.⏱️ Your video must be 180 seconds long. Your clips add up to 165 seconds. How many more seconds of video do you need?
  38. 38.⏱️ A 140-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  39. 39.⏱️ A 19-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  40. 40.⏱️ A 20-second clip is sped up to 2× speed. How long does it last now (in seconds)?

Answer key

  1. 28
  2. 2 min 45 s
  3. half as long
  4. 20
  5. 60
  6. 26
  7. 55
  8. 58
  9. 34
  10. 54
  11. 18
  12. 4 min 40 s
  13. 40
  14. 5 min 50 s
  15. 9 min 10 s
  16. 22
  17. 1 min 0 s
  18. 227
  19. 144
  20. 48
  21. 563
  22. 13
  23. 72
  24. 432
  25. 9 min 30 s
  26. 473
  27. 89
  28. 269
  29. 24
  30. 40
  31. 24
  32. 31
  33. 40
  34. 223
  35. 56
  36. 10
  37. 15
  38. 35
  39. 38
  40. 10

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