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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 195 · 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.⏱️ How many seconds are in 1 minute? (a) 10 (b) 60 (c) 30 (d) 100
  2. 2.⏱️ Your video must be 180 seconds long. Your clips add up to 112 seconds. How many more seconds of video do you need?
  3. 3.⏱️ A 36-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  4. 4.⏱️ Your video must be 90 seconds long. Your clips add up to 79 seconds. How many more seconds of video do you need?
  5. 5.⏱️ A 20-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  6. 6.⏱️ Your video must be 120 seconds long. Your clips add up to 114 seconds. How many more seconds of video do you need?
  7. 7.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) always 1 minute (c) the sum of the clips (d) the longest clip
  8. 8.⏱️ A video has three clips of 50, 57 and 39 seconds. How long is the video (in seconds)?
  9. 9.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  10. 10.⏱️ A video has three clips of 32, 17 and 32 seconds. How long is the video (in seconds)?
  11. 11.⏱️ A 27-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  12. 12.⏱️ How many seconds is 8 minutes 39 seconds?
  13. 13.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) the same length (c) silent (d) twice as long
  14. 14.⏱️ A 24-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  15. 15.⏱️ A video has three clips of 36, 12 and 37 seconds. How long is the video (in seconds)?
  16. 16.⏱️ A video has three clips of 41, 10 and 54 seconds. How long is the video (in seconds)?
  17. 17.⏱️ A 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  18. 18.⏱️ A video has three clips of 30, 15 and 5 seconds. How long is the video (in seconds)?
  19. 19.⏱️ A 105-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  20. 20.⏱️ A video has three clips of 33, 37 and 35 seconds. How long is the video (in seconds)?
  21. 21.⏱️ Your video must be 180 seconds long. Your clips add up to 32 seconds. How many more seconds of video do you need?
  22. 22.⏱️ How many seconds is 3 minutes 49 seconds?
  23. 23.⏱️ A video has three clips of 55, 29 and 6 seconds. How long is the video (in seconds)?
  24. 24.⏱️ How many seconds is 9 minutes 14 seconds?
  25. 25.⏱️ How many seconds is 7 minutes 33 seconds?
  26. 26.⏱️ A 70-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  27. 27.⏱️ How many seconds is 2 minutes 50 seconds?
  28. 28.⏱️ Your video must be 120 seconds long. Your clips add up to 110 seconds. How many more seconds of video do you need?
  29. 29.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  30. 30.⏱️ An 8-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  31. 31.⏱️ A 24-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  32. 32.⏱️ A video is 150 seconds long. How long is that in minutes and seconds? (a) 3 min 30 s (b) 1 min 50 s (c) 2 min 0 s (d) 2 min 30 s
  33. 33.⏱️ Your video must be 120 seconds long. Your clips add up to 96 seconds. How many more seconds of video do you need?
  34. 34.⏱️ How many seconds is 4 minutes 26 seconds?
  35. 35.⏱️ A video has three clips of 26, 28 and 23 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  37. 37.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  38. 38.⏱️ A video has three clips of 16, 56 and 52 seconds. How long is the video (in seconds)?
  39. 39.⏱️ A video is 230 seconds long. How long is that in minutes and seconds? (a) 3 min 20 s (b) 2 min 30 s (c) 3 min 50 s (d) 4 min 50 s
  40. 40.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?

Answer key

  1. 60
  2. 68
  3. 18
  4. 11
  5. 5
  6. 6
  7. the sum of the clips
  8. 146
  9. 58
  10. 81
  11. 54
  12. 519
  13. half as long
  14. 8
  15. 85
  16. 105
  17. 30
  18. 50
  19. 35
  20. 105
  21. 148
  22. 229
  23. 90
  24. 554
  25. 453
  26. 35
  27. 170
  28. 10
  29. 34
  30. 16
  31. 6
  32. 2 min 30 s
  33. 24
  34. 266
  35. 77
  36. 32
  37. 20
  38. 124
  39. 3 min 50 s
  40. 50

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