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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 7 · 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 66-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  2. 2.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  3. 3.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the longest clip (c) the sum of the clips (d) always 1 minute
  4. 4.⏱️ A video is 330 seconds long. How long is that in minutes and seconds? (a) 5 min 30 s (b) 5 min 0 s (c) 3 min 30 s (d) 6 min 30 s
  5. 5.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  6. 6.⏱️ Your video must be 120 seconds long. Your clips add up to 85 seconds. How many more seconds of video do you need?
  7. 7.⏱️ A video has three clips of 13, 20 and 53 seconds. How long is the video (in seconds)?
  8. 8.⏱️ Your video must be 90 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?
  9. 9.⏱️ How many seconds are in 1 minute? (a) 60 (b) 30 (c) 10 (d) 100
  10. 10.⏱️ A video has three clips of 47, 30 and 55 seconds. How long is the video (in seconds)?
  11. 11.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) the same length (c) half as long (d) twice as long
  12. 12.⏱️ A video is 495 seconds long. How long is that in minutes and seconds? (a) 8 min 15 s (b) 8 min 45 s (c) 4 min 95 s (d) 9 min 15 s
  13. 13.⏱️ How many seconds is 8 minutes 56 seconds?
  14. 14.⏱️ How many seconds is 8 minutes 46 seconds?
  15. 15.⏱️ A video has three clips of 39, 59 and 26 seconds. How long is the video (in seconds)?
  16. 16.⏱️ A 36-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  17. 17.⏱️ A video is 540 seconds long. How long is that in minutes and seconds? (a) 5 min 40 s (b) 9 min 0 s (c) 9 min 30 s (d) 10 min 0 s
  18. 18.⏱️ A video has three clips of 37, 7 and 18 seconds. How long is the video (in seconds)?
  19. 19.⏱️ How many seconds is 3 minutes 48 seconds?
  20. 20.⏱️ A 54-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  21. 21.⏱️ How many seconds is 3 minutes 14 seconds?
  22. 22.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  23. 23.⏱️ A 75-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  24. 24.⏱️ An 11-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  25. 25.⏱️ A 42-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  26. 26.⏱️ A 58-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  27. 27.⏱️ A video is 175 seconds long. How long is that in minutes and seconds? (a) 1 min 75 s (b) 2 min 55 s (c) 3 min 55 s (d) 2 min 25 s
  28. 28.⏱️ A 78-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  29. 29.⏱️ A video is 410 seconds long. How long is that in minutes and seconds? (a) 6 min 50 s (b) 7 min 50 s (c) 4 min 10 s (d) 6 min 20 s
  30. 30.⏱️ A 112-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  31. 31.⏱️ A 96-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  32. 32.⏱️ Your video must be 120 seconds long. Your clips add up to 11 seconds. How many more seconds of video do you need?
  33. 33.⏱️ A video has three clips of 58, 8 and 36 seconds. How long is the video (in seconds)?
  34. 34.⏱️ How many seconds is 8 minutes 7 seconds?
  35. 35.⏱️ A 36-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  36. 36.⏱️ How many seconds is 7 minutes 47 seconds?
  37. 37.⏱️ How many seconds is 2 minutes 13 seconds?
  38. 38.⏱️ A video is 295 seconds long. How long is that in minutes and seconds? (a) 4 min 25 s (b) 2 min 95 s (c) 4 min 55 s (d) 5 min 55 s
  39. 39.⏱️ A video has three clips of 23, 23 and 39 seconds. How long is the video (in seconds)?
  40. 40.⏱️ A 74-second clip is sped up to 2× speed. How long does it last now (in seconds)?

Answer key

  1. 33
  2. 6
  3. the sum of the clips
  4. 5 min 30 s
  5. 34
  6. 35
  7. 86
  8. 74
  9. 60
  10. 132
  11. half as long
  12. 8 min 15 s
  13. 536
  14. 526
  15. 124
  16. 9
  17. 9 min 0 s
  18. 62
  19. 228
  20. 18
  21. 194
  22. 10
  23. 25
  24. 22
  25. 14
  26. 29
  27. 2 min 55 s
  28. 26
  29. 6 min 50 s
  30. 28
  31. 24
  32. 109
  33. 102
  34. 487
  35. 18
  36. 467
  37. 133
  38. 4 min 55 s
  39. 85
  40. 37

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