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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 344 · 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 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  2. 2.⏱️ How many seconds is 3 minutes 44 seconds?
  3. 3.⏱️ Your video must be 120 seconds long. Your clips add up to 80 seconds. How many more seconds of video do you need?
  4. 4.⏱️ A 12-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  5. 5.⏱️ A 48-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  6. 6.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  7. 7.⏱️ A video is 505 seconds long. How long is that in minutes and seconds? (a) 5 min 5 s (b) 9 min 25 s (c) 8 min 25 s (d) 8 min 55 s
  8. 8.⏱️ A video is 345 seconds long. How long is that in minutes and seconds? (a) 5 min 15 s (b) 6 min 45 s (c) 5 min 45 s (d) 3 min 45 s
  9. 9.⏱️ A video is 395 seconds long. How long is that in minutes and seconds? (a) 3 min 95 s (b) 6 min 5 s (c) 6 min 35 s (d) 7 min 35 s
  10. 10.⏱️ A 60-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  11. 11.⏱️ How many seconds is 4 minutes 32 seconds?
  12. 12.⏱️ A 24-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  13. 13.⏱️ A 16-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 9 seconds. How many more seconds of video do you need?
  15. 15.⏱️ How many seconds are in 1 minute? (a) 30 (b) 10 (c) 60 (d) 100
  16. 16.⏱️ A 42-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  17. 17.⏱️ A video has three clips of 42, 59 and 15 seconds. How long is the video (in seconds)?
  18. 18.⏱️ How many seconds is 1 minute 24 seconds?
  19. 19.⏱️ A 64-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  20. 20.⏱️ A video has three clips of 36, 43 and 49 seconds. How long is the video (in seconds)?
  21. 21.⏱️ When you put clips one after another, the video length is … (a) always 1 minute (b) the sum of the clips (c) the longest clip (d) the shortest clip
  22. 22.⏱️ Your video must be 180 seconds long. Your clips add up to 80 seconds. How many more seconds of video do you need?
  23. 23.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  24. 24.⏱️ Your video must be 180 seconds long. Your clips add up to 31 seconds. How many more seconds of video do you need?
  25. 25.⏱️ A video has three clips of 6, 40 and 47 seconds. How long is the video (in seconds)?
  26. 26.⏱️ A 132-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  27. 27.⏱️ A video has three clips of 38, 35 and 45 seconds. How long is the video (in seconds)?
  28. 28.⏱️ An 84-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  29. 29.⏱️ A 23-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  30. 30.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  31. 31.⏱️ A video is 435 seconds long. How long is that in minutes and seconds? (a) 7 min 45 s (b) 4 min 35 s (c) 8 min 15 s (d) 7 min 15 s
  32. 32.⏱️ Your video must be 120 seconds long. Your clips add up to 90 seconds. How many more seconds of video do you need?
  33. 33.⏱️ Speeding a clip up to 2× makes it … (a) twice as long (b) silent (c) the same length (d) half as long
  34. 34.⏱️ A 40-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  35. 35.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  36. 36.⏱️ A video has three clips of 39, 21 and 31 seconds. How long is the video (in seconds)?
  37. 37.⏱️ How many seconds is 7 minutes 9 seconds?
  38. 38.⏱️ How many seconds is 2 minutes 35 seconds?
  39. 39.⏱️ How many seconds is 8 minutes 38 seconds?
  40. 40.⏱️ Your video must be 60 seconds long. Your clips add up to 15 seconds. How many more seconds of video do you need?

Answer key

  1. 50
  2. 224
  3. 40
  4. 6
  5. 24
  6. 36
  7. 8 min 25 s
  8. 5 min 45 s
  9. 6 min 35 s
  10. 20
  11. 272
  12. 8
  13. 8
  14. 51
  15. 60
  16. 21
  17. 116
  18. 84
  19. 16
  20. 128
  21. the sum of the clips
  22. 100
  23. 40
  24. 149
  25. 93
  26. 33
  27. 118
  28. 28
  29. 46
  30. 14
  31. 7 min 15 s
  32. 30
  33. half as long
  34. 10
  35. 34
  36. 91
  37. 429
  38. 155
  39. 518
  40. 45

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