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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 158 · 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.⏱️ Your video must be 90 seconds long. Your clips add up to 85 seconds. How many more seconds of video do you need?
  2. 2.⏱️ Your video must be 180 seconds long. Your clips add up to 144 seconds. How many more seconds of video do you need?
  3. 3.⏱️ How many seconds is 8 minutes 13 seconds?
  4. 4.⏱️ How many seconds is 8 minutes 3 seconds?
  5. 5.⏱️ A 60-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  6. 6.⏱️ A video has three clips of 25, 33 and 10 seconds. How long is the video (in seconds)?
  7. 7.⏱️ A 70-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  8. 8.⏱️ A video has three clips of 51, 21 and 7 seconds. How long is the video (in seconds)?
  9. 9.⏱️ How many seconds is 2 minutes 15 seconds?
  10. 10.⏱️ A video has three clips of 14, 30 and 15 seconds. How long is the video (in seconds)?
  11. 11.⏱️ A video is 540 seconds long. How long is that in minutes and seconds? (a) 9 min 0 s (b) 9 min 30 s (c) 10 min 0 s (d) 5 min 40 s
  12. 12.⏱️ A 92-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  13. 13.⏱️ A 58-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  14. 14.⏱️ An 80-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  15. 15.⏱️ A 75-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  16. 16.⏱️ How many seconds are in 1 minute? (a) 60 (b) 10 (c) 100 (d) 30
  17. 17.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) twice as long (c) silent (d) half as long
  18. 18.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  19. 19.⏱️ A video has three clips of 24, 26 and 56 seconds. How long is the video (in seconds)?
  20. 20.⏱️ A 76-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  21. 21.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  22. 22.⏱️ A 19-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  23. 23.⏱️ A video is 340 seconds long. How long is that in minutes and seconds? (a) 6 min 40 s (b) 3 min 40 s (c) 5 min 40 s (d) 5 min 10 s
  24. 24.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) the shortest clip (c) always 1 minute (d) the longest clip
  25. 25.⏱️ How many seconds is 3 minutes 28 seconds?
  26. 26.⏱️ A 112-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  27. 27.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  28. 28.⏱️ A video has three clips of 17, 59 and 46 seconds. How long is the video (in seconds)?
  29. 29.⏱️ A video has three clips of 46, 31 and 50 seconds. How long is the video (in seconds)?
  30. 30.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  31. 31.⏱️ How many seconds is 1 minute 15 seconds?
  32. 32.⏱️ A 34-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  33. 33.⏱️ A 33-second clip is sped up to 3× speed. 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 is 470 seconds long. How long is that in minutes and seconds? (a) 7 min 20 s (b) 8 min 50 s (c) 7 min 50 s (d) 4 min 70 s
  36. 36.⏱️ A video has three clips of 17, 13 and 24 seconds. How long is the video (in seconds)?
  37. 37.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  38. 38.⏱️ A 108-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  39. 39.⏱️ A video is 585 seconds long. How long is that in minutes and seconds? (a) 10 min 45 s (b) 5 min 85 s (c) 9 min 45 s (d) 9 min 15 s
  40. 40.⏱️ A video has three clips of 47, 52 and 51 seconds. How long is the video (in seconds)?

Answer key

  1. 5
  2. 36
  3. 493
  4. 483
  5. 15
  6. 68
  7. 35
  8. 79
  9. 135
  10. 59
  11. 9 min 0 s
  12. 23
  13. 29
  14. 40
  15. 25
  16. 60
  17. half as long
  18. 58
  19. 106
  20. 19
  21. 8
  22. 38
  23. 5 min 40 s
  24. the sum of the clips
  25. 208
  26. 28
  27. 56
  28. 122
  29. 127
  30. 10
  31. 75
  32. 17
  33. 11
  34. 6
  35. 7 min 50 s
  36. 54
  37. 40
  38. 27
  39. 9 min 45 s
  40. 150

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