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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 262 · 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 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  2. 2.⏱️ Your video must be 120 seconds long. Your clips add up to 10 seconds. How many more seconds of video do you need?
  3. 3.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) the same length (c) silent (d) twice as long
  4. 4.⏱️ How many seconds are in 1 minute? (a) 100 (b) 60 (c) 30 (d) 10
  5. 5.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  6. 6.⏱️ A video has three clips of 40, 23 and 14 seconds. How long is the video (in seconds)?
  7. 7.⏱️ How many seconds is 8 minutes 37 seconds?
  8. 8.⏱️ How many seconds is 5 minutes 9 seconds?
  9. 9.⏱️ How many seconds is 2 minutes 58 seconds?
  10. 10.⏱️ A video has three clips of 7, 56 and 55 seconds. How long is the video (in seconds)?
  11. 11.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  12. 12.⏱️ A video is 540 seconds long. How long is that in minutes and seconds? (a) 9 min 30 s (b) 10 min 0 s (c) 5 min 40 s (d) 9 min 0 s
  13. 13.⏱️ A video has three clips of 11, 9 and 39 seconds. How long is the video (in seconds)?
  14. 14.⏱️ A video has three clips of 52, 55 and 15 seconds. How long is the video (in seconds)?
  15. 15.⏱️ How many seconds is 5 minutes 39 seconds?
  16. 16.⏱️ Your video must be 90 seconds long. Your clips add up to 13 seconds. How many more seconds of video do you need?
  17. 17.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  18. 18.⏱️ Your video must be 120 seconds long. Your clips add up to 23 seconds. How many more seconds of video do you need?
  19. 19.⏱️ A video has three clips of 20, 44 and 56 seconds. How long is the video (in seconds)?
  20. 20.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  21. 21.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) always 1 minute (c) the shortest clip (d) the sum of the clips
  22. 22.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  23. 23.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  24. 24.⏱️ A 36-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  25. 25.⏱️ A video has three clips of 45, 11 and 53 seconds. How long is the video (in seconds)?
  26. 26.⏱️ A video is 125 seconds long. How long is that in minutes and seconds? (a) 2 min 35 s (b) 3 min 5 s (c) 1 min 25 s (d) 2 min 5 s
  27. 27.⏱️ An 80-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  28. 28.⏱️ A video has three clips of 9, 60 and 13 seconds. How long is the video (in seconds)?
  29. 29.⏱️ A 26-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  30. 30.⏱️ Your video must be 90 seconds long. Your clips add up to 10 seconds. How many more seconds of video do you need?
  31. 31.⏱️ Your video must be 90 seconds long. Your clips add up to 47 seconds. How many more seconds of video do you need?
  32. 32.⏱️ A video has three clips of 38, 59 and 12 seconds. How long is the video (in seconds)?
  33. 33.⏱️ Your video must be 60 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?
  34. 34.⏱️ How many seconds is 2 minutes 54 seconds?
  35. 35.⏱️ A 52-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  36. 36.⏱️ Your video must be 120 seconds long. Your clips add up to 77 seconds. How many more seconds of video do you need?
  37. 37.⏱️ How many seconds is 4 minutes 17 seconds?
  38. 38.⏱️ A 68-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  39. 39.⏱️ Your video must be 90 seconds long. Your clips add up to 83 seconds. How many more seconds of video do you need?
  40. 40.⏱️ How many seconds is 2 minutes 2 seconds?

Answer key

  1. 30
  2. 110
  3. half as long
  4. 60
  5. 50
  6. 77
  7. 517
  8. 309
  9. 178
  10. 118
  11. 56
  12. 9 min 0 s
  13. 59
  14. 122
  15. 339
  16. 77
  17. 14
  18. 97
  19. 120
  20. 6
  21. the sum of the clips
  22. 12
  23. 48
  24. 12
  25. 109
  26. 2 min 5 s
  27. 20
  28. 82
  29. 13
  30. 80
  31. 43
  32. 109
  33. 44
  34. 174
  35. 26
  36. 43
  37. 257
  38. 34
  39. 7
  40. 122

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