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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 203 · 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.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) the sum of the clips (c) always 1 minute (d) the shortest clip
  2. 2.⏱️ A video has three clips of 40, 18 and 20 seconds. How long is the video (in seconds)?
  3. 3.⏱️ A 62-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  4. 4.⏱️ A video has three clips of 26, 45 and 34 seconds. How long is the video (in seconds)?
  5. 5.⏱️ Your video must be 120 seconds long. Your clips add up to 81 seconds. How many more seconds of video do you need?
  6. 6.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) the same length (c) twice as long (d) half as long
  7. 7.⏱️ An 11-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  8. 8.⏱️ How many seconds are in 1 minute? (a) 60 (b) 30 (c) 100 (d) 10
  9. 9.⏱️ A video has three clips of 11, 40 and 54 seconds. How long is the video (in seconds)?
  10. 10.⏱️ How many seconds is 2 minutes 40 seconds?
  11. 11.⏱️ How many seconds is 6 minutes 9 seconds?
  12. 12.⏱️ Your video must be 120 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
  13. 13.⏱️ A 100-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  14. 14.⏱️ Your video must be 90 seconds long. Your clips add up to 15 seconds. How many more seconds of video do you need?
  15. 15.⏱️ Your video must be 90 seconds long. Your clips add up to 73 seconds. How many more seconds of video do you need?
  16. 16.⏱️ A video has three clips of 60, 30 and 14 seconds. How long is the video (in seconds)?
  17. 17.⏱️ A video has three clips of 39, 19 and 7 seconds. How long is the video (in seconds)?
  18. 18.⏱️ A 64-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  19. 19.⏱️ How many seconds is 6 minutes 14 seconds?
  20. 20.⏱️ A 44-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  21. 21.⏱️ Your video must be 120 seconds long. Your clips add up to 31 seconds. How many more seconds of video do you need?
  22. 22.⏱️ Your video must be 60 seconds long. Your clips add up to 6 seconds. How many more seconds of video do you need?
  23. 23.⏱️ A video has three clips of 35, 20 and 21 seconds. How long is the video (in seconds)?
  24. 24.⏱️ How many seconds is 9 minutes 38 seconds?
  25. 25.⏱️ A 40-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  26. 26.⏱️ A 70-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  27. 27.⏱️ A video has three clips of 10, 35 and 21 seconds. How long is the video (in seconds)?
  28. 28.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  29. 29.⏱️ A video is 315 seconds long. How long is that in minutes and seconds? (a) 5 min 45 s (b) 3 min 15 s (c) 6 min 15 s (d) 5 min 15 s
  30. 30.⏱️ A video has three clips of 7, 51 and 24 seconds. How long is the video (in seconds)?
  31. 31.⏱️ A video is 125 seconds long. How long is that in minutes and seconds? (a) 3 min 5 s (b) 1 min 25 s (c) 2 min 35 s (d) 2 min 5 s
  32. 32.⏱️ How many seconds is 3 minutes 48 seconds?
  33. 33.⏱️ A 40-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  34. 34.⏱️ A video is 235 seconds long. How long is that in minutes and seconds? (a) 2 min 35 s (b) 4 min 55 s (c) 3 min 25 s (d) 3 min 55 s
  35. 35.⏱️ A video has three clips of 21, 11 and 48 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A 33-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  37. 37.⏱️ A video has three clips of 20, 16 and 56 seconds. How long is the video (in seconds)?
  38. 38.⏱️ A video is 170 seconds long. How long is that in minutes and seconds? (a) 3 min 50 s (b) 1 min 70 s (c) 2 min 20 s (d) 2 min 50 s
  39. 39.⏱️ A 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  40. 40.⏱️ Your video must be 60 seconds long. Your clips add up to 8 seconds. How many more seconds of video do you need?

Answer key

  1. the sum of the clips
  2. 78
  3. 31
  4. 105
  5. 39
  6. half as long
  7. 22
  8. 60
  9. 105
  10. 160
  11. 369
  12. 113
  13. 25
  14. 75
  15. 17
  16. 104
  17. 65
  18. 32
  19. 374
  20. 22
  21. 89
  22. 54
  23. 76
  24. 578
  25. 10
  26. 35
  27. 66
  28. 34
  29. 5 min 15 s
  30. 82
  31. 2 min 5 s
  32. 228
  33. 20
  34. 3 min 55 s
  35. 80
  36. 11
  37. 92
  38. 2 min 50 s
  39. 30
  40. 52

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