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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 290 · 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 video has three clips of 33, 19 and 19 seconds. How long is the video (in seconds)?
  2. 2.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) twice as long (c) half as long (d) the same length
  3. 3.⏱️ How many seconds is 2 minutes 5 seconds?
  4. 4.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the sum of the clips (c) the longest clip (d) always 1 minute
  5. 5.⏱️ How many seconds is 1 minute 36 seconds?
  6. 6.⏱️ A 68-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  7. 7.⏱️ A 39-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  8. 8.⏱️ A 54-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  9. 9.⏱️ Your video must be 90 seconds long. Your clips add up to 71 seconds. How many more seconds of video do you need?
  10. 10.⏱️ A video has three clips of 20, 36 and 15 seconds. How long is the video (in seconds)?
  11. 11.⏱️ A 33-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  12. 12.⏱️ A video is 310 seconds long. How long is that in minutes and seconds? (a) 3 min 10 s (b) 5 min 10 s (c) 5 min 40 s (d) 6 min 10 s
  13. 13.⏱️ A 156-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  14. 14.⏱️ A video has three clips of 48, 10 and 18 seconds. How long is the video (in seconds)?
  15. 15.⏱️ How many seconds is 6 minutes 11 seconds?
  16. 16.⏱️ Your video must be 60 seconds long. Your clips add up to 51 seconds. How many more seconds of video do you need?
  17. 17.⏱️ A 36-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  18. 18.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  19. 19.⏱️ A 108-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  20. 20.⏱️ Your video must be 90 seconds long. Your clips add up to 35 seconds. How many more seconds of video do you need?
  21. 21.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  22. 22.⏱️ How many seconds are in 1 minute? (a) 30 (b) 60 (c) 100 (d) 10
  23. 23.⏱️ Your video must be 90 seconds long. Your clips add up to 46 seconds. How many more seconds of video do you need?
  24. 24.⏱️ A 160-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  25. 25.⏱️ A 62-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  26. 26.⏱️ A video has three clips of 5, 22 and 43 seconds. How long is the video (in seconds)?
  27. 27.⏱️ A video has three clips of 32, 6 and 28 seconds. How long is the video (in seconds)?
  28. 28.⏱️ A video is 230 seconds long. How long is that in minutes and seconds? (a) 4 min 50 s (b) 2 min 30 s (c) 3 min 50 s (d) 3 min 20 s
  29. 29.⏱️ How many seconds is 6 minutes 36 seconds?
  30. 30.⏱️ How many seconds is 2 minutes 42 seconds?
  31. 31.⏱️ An 84-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  32. 32.⏱️ Your video must be 90 seconds long. Your clips add up to 53 seconds. How many more seconds of video do you need?
  33. 33.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  34. 34.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  35. 35.⏱️ A video has three clips of 48, 24 and 24 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A 51-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  37. 37.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  38. 38.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  39. 39.⏱️ A video is 495 seconds long. How long is that in minutes and seconds? (a) 8 min 45 s (b) 8 min 15 s (c) 4 min 95 s (d) 9 min 15 s
  40. 40.⏱️ Your video must be 60 seconds long. Your clips add up to 38 seconds. How many more seconds of video do you need?

Answer key

  1. 71
  2. half as long
  3. 125
  4. the sum of the clips
  5. 96
  6. 34
  7. 13
  8. 27
  9. 19
  10. 71
  11. 11
  12. 5 min 10 s
  13. 39
  14. 76
  15. 371
  16. 9
  17. 18
  18. 42
  19. 27
  20. 55
  21. 56
  22. 60
  23. 44
  24. 40
  25. 31
  26. 70
  27. 66
  28. 3 min 50 s
  29. 396
  30. 162
  31. 21
  32. 37
  33. 36
  34. 6
  35. 96
  36. 17
  37. 10
  38. 12
  39. 8 min 15 s
  40. 22

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