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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 115 · 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 video has three clips of 43, 25 and 6 seconds. How long is the video (in seconds)?
  2. 2.⏱️ How many seconds is 5 minutes 40 seconds?
  3. 3.⏱️ A video is 370 seconds long. How long is that in minutes and seconds? (a) 6 min 10 s (b) 3 min 70 s (c) 6 min 40 s (d) 7 min 10 s
  4. 4.⏱️ A video has three clips of 57, 50 and 50 seconds. How long is the video (in seconds)?
  5. 5.⏱️ How many seconds is 6 minutes 8 seconds?
  6. 6.⏱️ How many seconds is 8 minutes 14 seconds?
  7. 7.⏱️ How many seconds is 9 minutes 11 seconds?
  8. 8.⏱️ A 144-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  9. 9.⏱️ A video has three clips of 27, 54 and 34 seconds. How long is the video (in seconds)?
  10. 10.⏱️ A video has three clips of 39, 44 and 22 seconds. How long is the video (in seconds)?
  11. 11.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) twice as long (c) the same length (d) silent
  12. 12.⏱️ How many seconds is 7 minutes 10 seconds?
  13. 13.⏱️ A video has three clips of 18, 11 and 31 seconds. How long is the video (in seconds)?
  14. 14.⏱️ A 38-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  15. 15.⏱️ Your video must be 60 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?
  16. 16.⏱️ A video is 355 seconds long. How long is that in minutes and seconds? (a) 5 min 55 s (b) 6 min 55 s (c) 3 min 55 s (d) 5 min 25 s
  17. 17.⏱️ A video has three clips of 11, 19 and 55 seconds. How long is the video (in seconds)?
  18. 18.⏱️ A video is 120 seconds long. How long is that in minutes and seconds? (a) 1 min 20 s (b) 2 min 0 s (c) 3 min 0 s (d) 2 min 30 s
  19. 19.⏱️ A video is 285 seconds long. How long is that in minutes and seconds? (a) 4 min 15 s (b) 4 min 45 s (c) 2 min 85 s (d) 5 min 45 s
  20. 20.⏱️ How many seconds is 6 minutes 43 seconds?
  21. 21.⏱️ A video has three clips of 16, 29 and 8 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A video has three clips of 38, 26 and 11 seconds. How long is the video (in seconds)?
  23. 23.⏱️ How many seconds are in 1 minute? (a) 100 (b) 60 (c) 30 (d) 10
  24. 24.⏱️ A video has three clips of 34, 5 and 26 seconds. How long is the video (in seconds)?
  25. 25.⏱️ A video is 510 seconds long. How long is that in minutes and seconds? (a) 9 min 30 s (b) 8 min 30 s (c) 5 min 10 s (d) 8 min 0 s
  26. 26.⏱️ An 84-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  27. 27.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  28. 28.⏱️ 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
  29. 29.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  30. 30.⏱️ Your video must be 120 seconds long. Your clips add up to 77 seconds. How many more seconds of video do you need?
  31. 31.⏱️ Your video must be 90 seconds long. Your clips add up to 60 seconds. How many more seconds of video do you need?
  32. 32.⏱️ Your video must be 180 seconds long. Your clips add up to 24 seconds. How many more seconds of video do you need?
  33. 33.⏱️ A 120-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  34. 34.⏱️ A 24-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  35. 35.⏱️ A video has three clips of 5, 23 and 54 seconds. How long is the video (in seconds)?
  36. 36.⏱️ How many seconds is 7 minutes 6 seconds?
  37. 37.⏱️ An 84-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  38. 38.⏱️ A 78-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  39. 39.⏱️ A video has three clips of 46, 46 and 28 seconds. How long is the video (in seconds)?
  40. 40.⏱️ A video has three clips of 50, 7 and 50 seconds. How long is the video (in seconds)?

Answer key

  1. 74
  2. 340
  3. 6 min 10 s
  4. 157
  5. 368
  6. 494
  7. 551
  8. 36
  9. 115
  10. 105
  11. half as long
  12. 430
  13. 60
  14. 19
  15. 44
  16. 5 min 55 s
  17. 85
  18. 2 min 0 s
  19. 4 min 45 s
  20. 403
  21. 53
  22. 75
  23. 60
  24. 65
  25. 8 min 30 s
  26. 28
  27. 8
  28. the sum of the clips
  29. 10
  30. 43
  31. 30
  32. 156
  33. 30
  34. 6
  35. 82
  36. 426
  37. 21
  38. 26
  39. 120
  40. 107

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