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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 343 · 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 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  2. 2.⏱️ How many seconds are in 1 minute? (a) 10 (b) 30 (c) 60 (d) 100
  3. 3.⏱️ A video is 225 seconds long. How long is that in minutes and seconds? (a) 2 min 25 s (b) 3 min 45 s (c) 3 min 15 s (d) 4 min 45 s
  4. 4.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) silent (c) twice as long (d) half as long
  5. 5.⏱️ 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
  6. 6.⏱️ A 54-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  7. 7.⏱️ A video has three clips of 18, 16 and 58 seconds. How long is the video (in seconds)?
  8. 8.⏱️ Your video must be 120 seconds long. Your clips add up to 78 seconds. How many more seconds of video do you need?
  9. 9.⏱️ A 70-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  10. 10.⏱️ A video has three clips of 35, 47 and 23 seconds. How long is the video (in seconds)?
  11. 11.⏱️ A video is 315 seconds long. How long is that in minutes and seconds? (a) 6 min 15 s (b) 5 min 15 s (c) 5 min 45 s (d) 3 min 15 s
  12. 12.⏱️ Your video must be 120 seconds long. Your clips add up to 25 seconds. How many more seconds of video do you need?
  13. 13.⏱️ A 20-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  14. 14.⏱️ A video has three clips of 5, 28 and 16 seconds. How long is the video (in seconds)?
  15. 15.⏱️ An 11-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  16. 16.⏱️ A video has three clips of 29, 9 and 56 seconds. How long is the video (in seconds)?
  17. 17.⏱️ Your video must be 120 seconds long. Your clips add up to 57 seconds. How many more seconds of video do you need?
  18. 18.⏱️ Your video must be 60 seconds long. Your clips add up to 13 seconds. How many more seconds of video do you need?
  19. 19.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  20. 20.⏱️ Your video must be 60 seconds long. Your clips add up to 15 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.⏱️ A video has three clips of 33, 24 and 44 seconds. How long is the video (in seconds)?
  23. 23.⏱️ A 50-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  24. 24.⏱️ How many seconds is 1 minute 10 seconds?
  25. 25.⏱️ How many seconds is 5 minutes 39 seconds?
  26. 26.⏱️ How many seconds is 2 minutes 11 seconds?
  27. 27.⏱️ A 36-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  28. 28.⏱️ A 36-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  29. 29.⏱️ A video is 275 seconds long. How long is that in minutes and seconds? (a) 5 min 35 s (b) 2 min 75 s (c) 4 min 5 s (d) 4 min 35 s
  30. 30.⏱️ How many seconds is 1 minute 35 seconds?
  31. 31.⏱️ How many seconds is 5 minutes 2 seconds?
  32. 32.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  33. 33.⏱️ A 21-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  34. 34.⏱️ A video is 270 seconds long. How long is that in minutes and seconds? (a) 5 min 30 s (b) 2 min 70 s (c) 4 min 30 s (d) 4 min 0 s
  35. 35.⏱️ Your video must be 90 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
  36. 36.⏱️ Your video must be 180 seconds long. Your clips add up to 14 seconds. How many more seconds of video do you need?
  37. 37.⏱️ A video has three clips of 37, 37 and 29 seconds. How long is the video (in seconds)?
  38. 38.⏱️ A 46-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  39. 39.⏱️ A video has three clips of 26, 56 and 8 seconds. How long is the video (in seconds)?
  40. 40.⏱️ How many seconds is 6 minutes 15 seconds?

Answer key

  1. 6
  2. 60
  3. 3 min 45 s
  4. half as long
  5. the sum of the clips
  6. 27
  7. 92
  8. 42
  9. 35
  10. 105
  11. 5 min 15 s
  12. 95
  13. 10
  14. 49
  15. 22
  16. 94
  17. 63
  18. 47
  19. 26
  20. 45
  21. 56
  22. 101
  23. 25
  24. 70
  25. 339
  26. 131
  27. 18
  28. 9
  29. 4 min 35 s
  30. 95
  31. 302
  32. 32
  33. 7
  34. 4 min 30 s
  35. 83
  36. 166
  37. 103
  38. 23
  39. 90
  40. 375

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