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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 72 · 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.⏱️ A 144-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  2. 2.⏱️ How many seconds is 3 minutes 50 seconds?
  3. 3.⏱️ How many seconds is 7 minutes 13 seconds?
  4. 4.⏱️ Your video must be 120 seconds long. Your clips add up to 40 seconds. How many more seconds of video do you need?
  5. 5.⏱️ How many seconds is 5 minutes 55 seconds?
  6. 6.⏱️ An 18-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  7. 7.⏱️ A video is 200 seconds long. How long is that in minutes and seconds? (a) 3 min 50 s (b) 4 min 20 s (c) 2 min 0 s (d) 3 min 20 s
  8. 8.⏱️ A 39-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  9. 9.⏱️ A video is 85 seconds long. How long is that in minutes and seconds? (a) 1 min 25 s (b) 3 min 25 s (c) 1 min 55 s (d) 2 min 25 s
  10. 10.⏱️ A video has three clips of 47, 23 and 5 seconds. How long is the video (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.⏱️ Your video must be 180 seconds long. Your clips add up to 77 seconds. How many more seconds of video do you need?
  13. 13.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  14. 14.⏱️ A 66-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  15. 15.⏱️ How many seconds is 5 minutes 10 seconds?
  16. 16.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  17. 17.⏱️ Your video must be 90 seconds long. Your clips add up to 18 seconds. How many more seconds of video do you need?
  18. 18.⏱️ A video has three clips of 31, 25 and 15 seconds. How long is the video (in seconds)?
  19. 19.⏱️ An 11-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  20. 20.⏱️ When you put clips one after another, the video length is … (a) always 1 minute (b) the shortest clip (c) the sum of the clips (d) the longest clip
  21. 21.⏱️ A 14-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  22. 22.⏱️ How many seconds is 1 minute 38 seconds?
  23. 23.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  24. 24.⏱️ A video is 275 seconds long. How long is that in minutes and seconds? (a) 5 min 35 s (b) 4 min 35 s (c) 4 min 5 s (d) 2 min 75 s
  25. 25.⏱️ Your video must be 90 seconds long. Your clips add up to 70 seconds. How many more seconds of video do you need?
  26. 26.⏱️ A 40-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  27. 27.⏱️ A 20-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  28. 28.⏱️ A video has three clips of 53, 34 and 36 seconds. How long is the video (in seconds)?
  29. 29.⏱️ A 128-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  30. 30.⏱️ A 108-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  31. 31.⏱️ A 19-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 109 seconds. How many more seconds of video do you need?
  33. 33.⏱️ A video is 305 seconds long. How long is that in minutes and seconds? (a) 5 min 35 s (b) 3 min 5 s (c) 5 min 5 s (d) 6 min 5 s
  34. 34.⏱️ A video has three clips of 59, 19 and 22 seconds. How long is the video (in seconds)?
  35. 35.⏱️ A 76-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  36. 36.⏱️ How many seconds is 6 minutes 17 seconds?
  37. 37.⏱️ A video has three clips of 54, 17 and 29 seconds. How long is the video (in seconds)?
  38. 38.⏱️ A video is 190 seconds long. How long is that in minutes and seconds? (a) 4 min 10 s (b) 3 min 10 s (c) 3 min 40 s (d) 1 min 90 s
  39. 39.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  40. 40.⏱️ A video has three clips of 48, 20 and 5 seconds. How long is the video (in seconds)?

Answer key

  1. 36
  2. 230
  3. 433
  4. 80
  5. 355
  6. 9
  7. 3 min 20 s
  8. 13
  9. 1 min 25 s
  10. 75
  11. 18
  12. 103
  13. 34
  14. 33
  15. 310
  16. 12
  17. 72
  18. 71
  19. 22
  20. the sum of the clips
  21. 7
  22. 98
  23. 56
  24. 4 min 35 s
  25. 20
  26. 10
  27. 10
  28. 123
  29. 32
  30. 36
  31. 38
  32. 11
  33. 5 min 5 s
  34. 100
  35. 38
  36. 377
  37. 100
  38. 3 min 10 s
  39. 58
  40. 73

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