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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 300 · 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 120 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
  2. 2.⏱️ How many seconds is 6 minutes 34 seconds?
  3. 3.⏱️ A video is 425 seconds long. How long is that in minutes and seconds? (a) 7 min 5 s (b) 7 min 35 s (c) 4 min 25 s (d) 8 min 5 s
  4. 4.⏱️ Your video must be 60 seconds long. Your clips add up to 20 seconds. How many more seconds of video do you need?
  5. 5.⏱️ How many seconds is 7 minutes 25 seconds?
  6. 6.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) half as long (c) the same length (d) twice as long
  7. 7.⏱️ A video is 170 seconds long. How long is that in minutes and seconds? (a) 2 min 50 s (b) 1 min 70 s (c) 3 min 50 s (d) 2 min 20 s
  8. 8.⏱️ A video has three clips of 20, 30 and 9 seconds. How long is the video (in seconds)?
  9. 9.⏱️ How many seconds is 1 minute 3 seconds?
  10. 10.⏱️ A video is 185 seconds long. How long is that in minutes and seconds? (a) 1 min 85 s (b) 3 min 5 s (c) 4 min 5 s (d) 3 min 35 s
  11. 11.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  12. 12.⏱️ Your video must be 60 seconds long. Your clips add up to 25 seconds. How many more seconds of video do you need?
  13. 13.⏱️ Your video must be 60 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
  14. 14.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) the longest clip (c) the shortest clip (d) always 1 minute
  15. 15.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  16. 16.⏱️ A 132-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  17. 17.⏱️ Your video must be 120 seconds long. Your clips add up to 43 seconds. How many more seconds of video do you need?
  18. 18.⏱️ A video has three clips of 34, 54 and 5 seconds. How long is the video (in seconds)?
  19. 19.⏱️ A video has three clips of 27, 60 and 23 seconds. How long is the video (in seconds)?
  20. 20.⏱️ How many seconds are in 1 minute? (a) 60 (b) 10 (c) 30 (d) 100
  21. 21.⏱️ Your video must be 180 seconds long. Your clips add up to 36 seconds. How many more seconds of video do you need?
  22. 22.⏱️ A 42-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  23. 23.⏱️ Your video must be 60 seconds long. Your clips add up to 39 seconds. How many more seconds of video do you need?
  24. 24.⏱️ How many seconds is 9 minutes 16 seconds?
  25. 25.⏱️ A video has three clips of 56, 25 and 53 seconds. How long is the video (in seconds)?
  26. 26.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  27. 27.⏱️ A 14-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 15, 59 and 44 seconds. How long is the video (in seconds)?
  29. 29.⏱️ A video has three clips of 16, 19 and 8 seconds. How long is the video (in seconds)?
  30. 30.⏱️ How many seconds is 3 minutes 13 seconds?
  31. 31.⏱️ How many seconds is 2 minutes 2 seconds?
  32. 32.⏱️ How many seconds is 6 minutes 50 seconds?
  33. 33.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  34. 34.⏱️ A 108-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  35. 35.⏱️ A video has three clips of 8, 60 and 14 seconds. How long is the video (in seconds)?
  36. 36.⏱️ An 18-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  37. 37.⏱️ How many seconds is 3 minutes 17 seconds?
  38. 38.⏱️ A 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  39. 39.⏱️ Your video must be 180 seconds long. Your clips add up to 30 seconds. How many more seconds of video do you need?
  40. 40.⏱️ A video is 505 seconds long. How long is that in minutes and seconds? (a) 8 min 55 s (b) 9 min 25 s (c) 5 min 5 s (d) 8 min 25 s

Answer key

  1. 113
  2. 394
  3. 7 min 5 s
  4. 40
  5. 445
  6. half as long
  7. 2 min 50 s
  8. 59
  9. 63
  10. 3 min 5 s
  11. 58
  12. 35
  13. 53
  14. the sum of the clips
  15. 32
  16. 33
  17. 77
  18. 93
  19. 110
  20. 60
  21. 144
  22. 21
  23. 21
  24. 556
  25. 134
  26. 6
  27. 28
  28. 118
  29. 43
  30. 193
  31. 122
  32. 410
  33. 26
  34. 27
  35. 82
  36. 9
  37. 197
  38. 30
  39. 150
  40. 8 min 25 s

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