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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 58 · 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 105-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  2. 2.⏱️ A video has three clips of 7, 16 and 36 seconds. How long is the video (in seconds)?
  3. 3.⏱️ A 22-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  4. 4.⏱️ A video is 350 seconds long. How long is that in minutes and seconds? (a) 6 min 50 s (b) 3 min 50 s (c) 5 min 20 s (d) 5 min 50 s
  5. 5.⏱️ Your video must be 120 seconds long. Your clips add up to 114 seconds. How many more seconds of video do you need?
  6. 6.⏱️ Your video must be 90 seconds long. Your clips add up to 83 seconds. How many more seconds of video do you need?
  7. 7.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  8. 8.⏱️ A 42-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  9. 9.⏱️ A 48-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  10. 10.⏱️ An 8-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  11. 11.⏱️ A 102-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  12. 12.⏱️ A video is 410 seconds long. How long is that in minutes and seconds? (a) 6 min 50 s (b) 6 min 20 s (c) 4 min 10 s (d) 7 min 50 s
  13. 13.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  14. 14.⏱️ A video has three clips of 18, 35 and 48 seconds. How long is the video (in seconds)?
  15. 15.⏱️ How many seconds are in 1 minute? (a) 100 (b) 30 (c) 10 (d) 60
  16. 16.⏱️ Your video must be 180 seconds long. Your clips add up to 39 seconds. How many more seconds of video do you need?
  17. 17.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the sum of the clips (c) always 1 minute (d) the longest clip
  18. 18.⏱️ Your video must be 120 seconds long. Your clips add up to 67 seconds. How many more seconds of video do you need?
  19. 19.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  20. 20.⏱️ A video is 330 seconds long. How long is that in minutes and seconds? (a) 3 min 30 s (b) 6 min 30 s (c) 5 min 0 s (d) 5 min 30 s
  21. 21.⏱️ A video has three clips of 5, 54 and 25 seconds. How long is the video (in seconds)?
  22. 22.⏱️ Your video must be 120 seconds long. Your clips add up to 9 seconds. How many more seconds of video do you need?
  23. 23.⏱️ Speeding a clip up to 2× makes it … (a) twice as long (b) silent (c) half as long (d) the same length
  24. 24.⏱️ A video is 380 seconds long. How long is that in minutes and seconds? (a) 6 min 50 s (b) 3 min 80 s (c) 6 min 20 s (d) 7 min 20 s
  25. 25.⏱️ Your video must be 180 seconds long. Your clips add up to 120 seconds. How many more seconds of video do you need?
  26. 26.⏱️ Your video must be 180 seconds long. Your clips add up to 94 seconds. How many more seconds of video do you need?
  27. 27.⏱️ A video has three clips of 17, 41 and 48 seconds. How long is the video (in seconds)?
  28. 28.⏱️ A 78-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  29. 29.⏱️ A video has three clips of 14, 32 and 35 seconds. How long is the video (in seconds)?
  30. 30.⏱️ A video is 225 seconds long. How long is that in minutes and seconds? (a) 3 min 45 s (b) 3 min 15 s (c) 4 min 45 s (d) 2 min 25 s
  31. 31.⏱️ A 57-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  32. 32.⏱️ A video has three clips of 16, 48 and 27 seconds. How long is the video (in seconds)?
  33. 33.⏱️ How many seconds is 2 minutes 23 seconds?
  34. 34.⏱️ How many seconds is 8 minutes 43 seconds?
  35. 35.⏱️ A video has three clips of 45, 39 and 21 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A video has three clips of 46, 8 and 20 seconds. How long is the video (in seconds)?
  37. 37.⏱️ A video has three clips of 14, 33 and 8 seconds. How long is the video (in seconds)?
  38. 38.⏱️ A 34-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  39. 39.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  40. 40.⏱️ A 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?

Answer key

  1. 35
  2. 59
  3. 11
  4. 5 min 50 s
  5. 6
  6. 7
  7. 24
  8. 14
  9. 24
  10. 16
  11. 34
  12. 6 min 50 s
  13. 40
  14. 101
  15. 60
  16. 141
  17. the sum of the clips
  18. 53
  19. 48
  20. 5 min 30 s
  21. 84
  22. 111
  23. half as long
  24. 6 min 20 s
  25. 60
  26. 86
  27. 106
  28. 39
  29. 81
  30. 3 min 45 s
  31. 19
  32. 91
  33. 143
  34. 523
  35. 105
  36. 74
  37. 55
  38. 17
  39. 50
  40. 30

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