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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 237 · 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.⏱️ Your video must be 90 seconds long. Your clips add up to 58 seconds. How many more seconds of video do you need?
  2. 2.⏱️ A video has three clips of 19, 46 and 6 seconds. How long is the video (in seconds)?
  3. 3.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  4. 4.⏱️ How many seconds are in 1 minute? (a) 10 (b) 100 (c) 30 (d) 60
  5. 5.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  6. 6.⏱️ A 44-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  7. 7.⏱️ A video has three clips of 33, 41 and 57 seconds. How long is the video (in seconds)?
  8. 8.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) half as long (c) twice as long (d) the same length
  9. 9.⏱️ Your video must be 180 seconds long. Your clips add up to 30 seconds. How many more seconds of video do you need?
  10. 10.⏱️ A 68-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  11. 11.⏱️ Your video must be 60 seconds long. Your clips add up to 51 seconds. How many more seconds of video do you need?
  12. 12.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  13. 13.⏱️ A video has three clips of 17, 35 and 7 seconds. How long is the video (in seconds)?
  14. 14.⏱️ A 75-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  15. 15.⏱️ Your video must be 120 seconds long. Your clips add up to 107 seconds. How many more seconds of video do you need?
  16. 16.⏱️ A 27-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  17. 17.⏱️ An 11-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  18. 18.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  19. 19.⏱️ A video is 115 seconds long. How long is that in minutes and seconds? (a) 1 min 55 s (b) 1 min 15 s (c) 2 min 55 s (d) 1 min 25 s
  20. 20.⏱️ A video is 445 seconds long. How long is that in minutes and seconds? (a) 7 min 25 s (b) 8 min 25 s (c) 7 min 55 s (d) 4 min 45 s
  21. 21.⏱️ A video is 480 seconds long. How long is that in minutes and seconds? (a) 4 min 80 s (b) 9 min 0 s (c) 8 min 30 s (d) 8 min 0 s
  22. 22.⏱️ 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
  23. 23.⏱️ A 60-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  24. 24.⏱️ Your video must be 180 seconds long. Your clips add up to 46 seconds. How many more seconds of video do you need?
  25. 25.⏱️ An 88-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  26. 26.⏱️ Your video must be 120 seconds long. Your clips add up to 75 seconds. How many more seconds of video do you need?
  27. 27.⏱️ A video is 555 seconds long. How long is that in minutes and seconds? (a) 9 min 45 s (b) 5 min 55 s (c) 9 min 15 s (d) 10 min 15 s
  28. 28.⏱️ Your video must be 180 seconds long. Your clips add up to 32 seconds. How many more seconds of video do you need?
  29. 29.⏱️ A 50-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  30. 30.⏱️ A video has three clips of 9, 32 and 37 seconds. How long is the video (in seconds)?
  31. 31.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  32. 32.⏱️ A 120-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  33. 33.⏱️ A video is 160 seconds long. How long is that in minutes and seconds? (a) 2 min 40 s (b) 1 min 60 s (c) 3 min 40 s (d) 2 min 10 s
  34. 34.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  35. 35.⏱️ A video has three clips of 10, 8 and 34 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A video has three clips of 49, 5 and 13 seconds. How long is the video (in seconds)?
  37. 37.⏱️ A video has three clips of 27, 7 and 25 seconds. How long is the video (in seconds)?
  38. 38.⏱️ A 64-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.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the sum of the clips (c) the longest clip (d) always 1 minute

Answer key

  1. 32
  2. 71
  3. 18
  4. 60
  5. 40
  6. 11
  7. 131
  8. half as long
  9. 150
  10. 17
  11. 9
  12. 28
  13. 59
  14. 25
  15. 13
  16. 54
  17. 22
  18. 10
  19. 1 min 55 s
  20. 7 min 25 s
  21. 8 min 0 s
  22. 6 min 50 s
  23. 15
  24. 134
  25. 22
  26. 45
  27. 9 min 15 s
  28. 148
  29. 25
  30. 78
  31. 12
  32. 30
  33. 2 min 40 s
  34. 56
  35. 52
  36. 67
  37. 59
  38. 32
  39. 50
  40. the sum of the clips

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