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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 310 · 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.⏱️ An 84-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  2. 2.⏱️ Your video must be 90 seconds long. Your clips add up to 21 seconds. How many more seconds of video do you need?
  3. 3.⏱️ How many seconds is 1 minute 26 seconds?
  4. 4.⏱️ How many seconds is 1 minute 14 seconds?
  5. 5.⏱️ How many seconds is 3 minutes 42 seconds?
  6. 6.⏱️ Your video must be 90 seconds long. Your clips add up to 81 seconds. How many more seconds of video do you need?
  7. 7.⏱️ A 52-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  8. 8.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  9. 9.⏱️ How many seconds is 2 minutes 57 seconds?
  10. 10.⏱️ A video is 405 seconds long. How long is that in minutes and seconds? (a) 6 min 45 s (b) 6 min 15 s (c) 4 min 5 s (d) 7 min 45 s
  11. 11.⏱️ A video has three clips of 19, 12 and 31 seconds. How long is the video (in seconds)?
  12. 12.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  13. 13.⏱️ Your video must be 60 seconds long. Your clips add up to 38 seconds. How many more seconds of video do you need?
  14. 14.⏱️ A 140-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  15. 15.⏱️ A 23-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  16. 16.⏱️ A video is 175 seconds long. How long is that in minutes and seconds? (a) 3 min 55 s (b) 2 min 55 s (c) 2 min 25 s (d) 1 min 75 s
  17. 17.⏱️ A video is 280 seconds long. How long is that in minutes and seconds? (a) 4 min 40 s (b) 2 min 80 s (c) 4 min 10 s (d) 5 min 40 s
  18. 18.⏱️ A 100-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  19. 19.⏱️ 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) 3 min 5 s (d) 5 min 35 s
  20. 20.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) always 1 minute (c) the longest clip (d) the shortest clip
  21. 21.⏱️ Your video must be 90 seconds long. Your clips add up to 71 seconds. How many more seconds of video do you need?
  22. 22.⏱️ A video has three clips of 30, 34 and 50 seconds. How long is the video (in seconds)?
  23. 23.⏱️ How many seconds are in 1 minute? (a) 30 (b) 60 (c) 10 (d) 100
  24. 24.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  25. 25.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  26. 26.⏱️ A 144-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  27. 27.⏱️ How many seconds is 9 minutes 38 seconds?
  28. 28.⏱️ A 50-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  29. 29.⏱️ A video has three clips of 53, 19 and 25 seconds. How long is the video (in seconds)?
  30. 30.⏱️ How many seconds is 8 minutes 28 seconds?
  31. 31.⏱️ How many seconds is 5 minutes 4 seconds?
  32. 32.⏱️ A 108-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  33. 33.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) the same length (c) twice as long (d) half as long
  34. 34.⏱️ Your video must be 120 seconds long. Your clips add up to 115 seconds. How many more seconds of video do you need?
  35. 35.⏱️ Your video must be 180 seconds long. Your clips add up to 51 seconds. How many more seconds of video do you need?
  36. 36.⏱️ Your video must be 180 seconds long. Your clips add up to 17 seconds. How many more seconds of video do you need?
  37. 37.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  38. 38.⏱️ Your video must be 90 seconds long. Your clips add up to 78 seconds. How many more seconds of video do you need?
  39. 39.⏱️ How many seconds is 2 minutes 15 seconds?
  40. 40.⏱️ 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) 8 min 0 s (d) 5 min 10 s

Answer key

  1. 21
  2. 69
  3. 86
  4. 74
  5. 222
  6. 9
  7. 26
  8. 58
  9. 177
  10. 6 min 45 s
  11. 62
  12. 8
  13. 22
  14. 35
  15. 46
  16. 2 min 55 s
  17. 4 min 40 s
  18. 25
  19. 5 min 5 s
  20. the sum of the clips
  21. 19
  22. 114
  23. 60
  24. 18
  25. 40
  26. 36
  27. 578
  28. 25
  29. 97
  30. 508
  31. 304
  32. 36
  33. half as long
  34. 5
  35. 129
  36. 163
  37. 10
  38. 12
  39. 135
  40. 8 min 30 s

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