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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 4 · 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 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  2. 2.⏱️ A video is 430 seconds long. How long is that in minutes and seconds? (a) 4 min 30 s (b) 7 min 40 s (c) 8 min 10 s (d) 7 min 10 s
  3. 3.⏱️ A 23-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  4. 4.⏱️ A video is 305 seconds long. How long is that in minutes and seconds? (a) 6 min 5 s (b) 5 min 5 s (c) 5 min 35 s (d) 3 min 5 s
  5. 5.⏱️ Your video must be 180 seconds long. Your clips add up to 110 seconds. How many more seconds of video do you need?
  6. 6.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) silent (c) twice as long (d) half as long
  7. 7.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  8. 8.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  9. 9.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  10. 10.⏱️ A 30-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  11. 11.⏱️ A 52-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  12. 12.⏱️ A 62-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  13. 13.⏱️ A video has three clips of 8, 42 and 60 seconds. How long is the video (in seconds)?
  14. 14.⏱️ A 140-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  15. 15.⏱️ A video has three clips of 28, 48 and 23 seconds. How long is the video (in seconds)?
  16. 16.⏱️ Your video must be 90 seconds long. Your clips add up to 12 seconds. How many more seconds of video do you need?
  17. 17.⏱️ A 32-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  18. 18.⏱️ How many seconds are in 1 minute? (a) 100 (b) 10 (c) 30 (d) 60
  19. 19.⏱️ Your video must be 120 seconds long. Your clips add up to 57 seconds. How many more seconds of video do you need?
  20. 20.⏱️ How many seconds is 7 minutes 14 seconds?
  21. 21.⏱️ A 144-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  22. 22.⏱️ Your video must be 60 seconds long. Your clips add up to 53 seconds. How many more seconds of video do you need?
  23. 23.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  24. 24.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  25. 25.⏱️ A video is 215 seconds long. How long is that in minutes and seconds? (a) 2 min 15 s (b) 4 min 35 s (c) 3 min 5 s (d) 3 min 35 s
  26. 26.⏱️ Your video must be 120 seconds long. Your clips add up to 102 seconds. How many more seconds of video do you need?
  27. 27.⏱️ A video has three clips of 30, 42 and 58 seconds. How long is the video (in seconds)?
  28. 28.⏱️ A video is 100 seconds long. How long is that in minutes and seconds? (a) 2 min 40 s (b) 1 min 0 s (c) 1 min 40 s (d) 1 min 10 s
  29. 29.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  30. 30.⏱️ Your video must be 180 seconds long. Your clips add up to 36 seconds. How many more seconds of video do you need?
  31. 31.⏱️ A video is 590 seconds long. How long is that in minutes and seconds? (a) 9 min 20 s (b) 9 min 50 s (c) 5 min 90 s (d) 10 min 50 s
  32. 32.⏱️ How many seconds is 2 minutes 20 seconds?
  33. 33.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  34. 34.⏱️ A 22-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 55, 29 and 12 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A video has three clips of 44, 33 and 5 seconds. How long is the video (in seconds)?
  37. 37.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) the shortest clip (c) the sum of the clips (d) always 1 minute
  38. 38.⏱️ A video has three clips of 32, 17 and 10 seconds. How long is the video (in seconds)?
  39. 39.⏱️ How many seconds is 3 minutes 55 seconds?
  40. 40.⏱️ A 60-second clip is sped up to 2× speed. How long does it last now (in seconds)?

Answer key

  1. 58
  2. 7 min 10 s
  3. 46
  4. 5 min 5 s
  5. 70
  6. half as long
  7. 10
  8. 20
  9. 18
  10. 10
  11. 26
  12. 31
  13. 110
  14. 35
  15. 99
  16. 78
  17. 8
  18. 60
  19. 63
  20. 434
  21. 36
  22. 7
  23. 14
  24. 6
  25. 3 min 35 s
  26. 18
  27. 130
  28. 1 min 40 s
  29. 56
  30. 144
  31. 9 min 50 s
  32. 140
  33. 40
  34. 44
  35. 96
  36. 82
  37. the sum of the clips
  38. 59
  39. 235
  40. 30

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