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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 84 · 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.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) the same length (c) twice as long (d) silent
  2. 2.⏱️ A 72-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  3. 3.⏱️ Your video must be 60 seconds long. Your clips add up to 9 seconds. How many more seconds of video do you need?
  4. 4.⏱️ A video has three clips of 12, 45 and 12 seconds. How long is the video (in seconds)?
  5. 5.⏱️ How many seconds are in 1 minute? (a) 30 (b) 100 (c) 60 (d) 10
  6. 6.⏱️ How many seconds is 9 minutes 34 seconds?
  7. 7.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) the sum of the clips (c) the shortest clip (d) always 1 minute
  8. 8.⏱️ How many seconds is 7 minutes 38 seconds?
  9. 9.⏱️ How many seconds is 6 minutes 41 seconds?
  10. 10.⏱️ A video has three clips of 49, 24 and 47 seconds. How long is the video (in seconds)?
  11. 11.⏱️ A 19-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  12. 12.⏱️ How many seconds is 5 minutes 42 seconds?
  13. 13.⏱️ A video has three clips of 35, 46 and 46 seconds. How long is the video (in seconds)?
  14. 14.⏱️ A 23-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  15. 15.⏱️ A video is 425 seconds long. How long is that in minutes and seconds? (a) 7 min 35 s (b) 7 min 5 s (c) 4 min 25 s (d) 8 min 5 s
  16. 16.⏱️ Your video must be 60 seconds long. Your clips add up to 13 seconds. How many more seconds of video do you need?
  17. 17.⏱️ Your video must be 180 seconds long. Your clips add up to 175 seconds. How many more seconds of video do you need?
  18. 18.⏱️ A 56-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  19. 19.⏱️ A 156-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  20. 20.⏱️ A video is 290 seconds long. How long is that in minutes and seconds? (a) 5 min 50 s (b) 4 min 50 s (c) 4 min 20 s (d) 2 min 90 s
  21. 21.⏱️ An 80-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  22. 22.⏱️ A 15-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  23. 23.⏱️ A video has three clips of 8, 34 and 37 seconds. How long is the video (in seconds)?
  24. 24.⏱️ A 100-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  25. 25.⏱️ A video has three clips of 50, 58 and 8 seconds. How long is the video (in seconds)?
  26. 26.⏱️ Your video must be 120 seconds long. Your clips add up to 93 seconds. How many more seconds of video do you need?
  27. 27.⏱️ How many seconds is 1 minute 15 seconds?
  28. 28.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  29. 29.⏱️ A video is 115 seconds long. How long is that in minutes and seconds? (a) 1 min 15 s (b) 2 min 55 s (c) 1 min 25 s (d) 1 min 55 s
  30. 30.⏱️ A 64-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  31. 31.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  32. 32.⏱️ How many seconds is 9 minutes 5 seconds?
  33. 33.⏱️ A video is 310 seconds long. How long is that in minutes and seconds? (a) 5 min 10 s (b) 5 min 40 s (c) 3 min 10 s (d) 6 min 10 s
  34. 34.⏱️ A 66-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  35. 35.⏱️ A video has three clips of 9, 14 and 60 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A 60-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  37. 37.⏱️ Your video must be 120 seconds long. Your clips add up to 83 seconds. How many more seconds of video do you need?
  38. 38.⏱️ A video has three clips of 21, 59 and 10 seconds. How long is the video (in seconds)?
  39. 39.⏱️ A video has three clips of 58, 32 and 14 seconds. How long is the video (in seconds)?
  40. 40.⏱️ Your video must be 120 seconds long. Your clips add up to 12 seconds. How many more seconds of video do you need?

Answer key

  1. half as long
  2. 36
  3. 51
  4. 69
  5. 60
  6. 574
  7. the sum of the clips
  8. 458
  9. 401
  10. 120
  11. 38
  12. 342
  13. 127
  14. 46
  15. 7 min 5 s
  16. 47
  17. 5
  18. 28
  19. 39
  20. 4 min 50 s
  21. 40
  22. 5
  23. 79
  24. 25
  25. 116
  26. 27
  27. 75
  28. 32
  29. 1 min 55 s
  30. 32
  31. 8
  32. 545
  33. 5 min 10 s
  34. 33
  35. 83
  36. 15
  37. 37
  38. 90
  39. 104
  40. 108

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