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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 226 · 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 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  2. 2.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the longest clip (c) the sum of the clips (d) always 1 minute
  3. 3.⏱️ A 42-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  4. 4.⏱️ A video has three clips of 22, 10 and 30 seconds. How long is the video (in seconds)?
  5. 5.⏱️ Your video must be 90 seconds long. Your clips add up to 18 seconds. How many more seconds of video do you need?
  6. 6.⏱️ A 12-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  7. 7.⏱️ Your video must be 60 seconds long. Your clips add up to 37 seconds. How many more seconds of video do you need?
  8. 8.⏱️ A video is 160 seconds long. How long is that in minutes and seconds? (a) 3 min 40 s (b) 1 min 60 s (c) 2 min 10 s (d) 2 min 40 s
  9. 9.⏱️ How many seconds are in 1 minute? (a) 60 (b) 10 (c) 30 (d) 100
  10. 10.⏱️ How many seconds is 1 minute 30 seconds?
  11. 11.⏱️ A 48-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  12. 12.⏱️ A 104-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  13. 13.⏱️ A 10-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  14. 14.⏱️ Your video must be 60 seconds long. Your clips add up to 26 seconds. How many more seconds of video do you need?
  15. 15.⏱️ How many seconds is 7 minutes 25 seconds?
  16. 16.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  17. 17.⏱️ A video is 375 seconds long. How long is that in minutes and seconds? (a) 6 min 15 s (b) 3 min 75 s (c) 6 min 45 s (d) 7 min 15 s
  18. 18.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  19. 19.⏱️ A video is 145 seconds long. How long is that in minutes and seconds? (a) 3 min 25 s (b) 1 min 45 s (c) 2 min 55 s (d) 2 min 25 s
  20. 20.⏱️ Your video must be 120 seconds long. Your clips add up to 86 seconds. How many more seconds of video do you need?
  21. 21.⏱️ A video is 545 seconds long. How long is that in minutes and seconds? (a) 9 min 5 s (b) 10 min 5 s (c) 9 min 35 s (d) 5 min 45 s
  22. 22.⏱️ A video has three clips of 55, 21 and 16 seconds. How long is the video (in seconds)?
  23. 23.⏱️ Your video must be 90 seconds long. Your clips add up to 22 seconds. How many more seconds of video do you need?
  24. 24.⏱️ A 96-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  25. 25.⏱️ A video has three clips of 46, 53 and 15 seconds. How long is the video (in seconds)?
  26. 26.⏱️ An 11-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  27. 27.⏱️ How many seconds is 3 minutes 12 seconds?
  28. 28.⏱️ Your video must be 180 seconds long. Your clips add up to 49 seconds. How many more seconds of video do you need?
  29. 29.⏱️ Your video must be 60 seconds long. Your clips add up to 53 seconds. How many more seconds of video do you need?
  30. 30.⏱️ How many seconds is 5 minutes 16 seconds?
  31. 31.⏱️ A 124-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  32. 32.⏱️ Your video must be 60 seconds long. Your clips add up to 35 seconds. How many more seconds of video do you need?
  33. 33.⏱️ A video has three clips of 52, 16 and 17 seconds. How long is the video (in seconds)?
  34. 34.⏱️ A video is 305 seconds long. How long is that in minutes and seconds? (a) 5 min 5 s (b) 6 min 5 s (c) 5 min 35 s (d) 3 min 5 s
  35. 35.⏱️ A video has three clips of 52, 35 and 9 seconds. How long is the video (in seconds)?
  36. 36.⏱️ Your video must be 120 seconds long. Your clips add up to 97 seconds. How many more seconds of video do you need?
  37. 37.⏱️ How many seconds is 5 minutes 5 seconds?
  38. 38.⏱️ A video is 550 seconds long. How long is that in minutes and seconds? (a) 9 min 40 s (b) 9 min 10 s (c) 5 min 50 s (d) 10 min 10 s
  39. 39.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) twice as long (c) the same length (d) half as long
  40. 40.⏱️ How many seconds is 7 minutes 46 seconds?

Answer key

  1. 20
  2. the sum of the clips
  3. 14
  4. 62
  5. 72
  6. 6
  7. 23
  8. 2 min 40 s
  9. 60
  10. 90
  11. 12
  12. 26
  13. 5
  14. 34
  15. 445
  16. 14
  17. 6 min 15 s
  18. 12
  19. 2 min 25 s
  20. 34
  21. 9 min 5 s
  22. 92
  23. 68
  24. 32
  25. 114
  26. 22
  27. 192
  28. 131
  29. 7
  30. 316
  31. 31
  32. 25
  33. 85
  34. 5 min 5 s
  35. 96
  36. 23
  37. 305
  38. 9 min 10 s
  39. half as long
  40. 466

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