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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 170 · 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 180 seconds long. Your clips add up to 116 seconds. How many more seconds of video do you need?
  2. 2.⏱️ A 10-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  3. 3.⏱️ How many seconds is 4 minutes 50 seconds?
  4. 4.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  5. 5.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) the shortest clip (c) the sum of the clips (d) always 1 minute
  6. 6.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) twice as long (c) silent (d) half as long
  7. 7.⏱️ Your video must be 120 seconds long. Your clips add up to 68 seconds. How many more seconds of video do you need?
  8. 8.⏱️ Your video must be 180 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?
  9. 9.⏱️ A 20-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  10. 10.⏱️ A video has three clips of 22, 11 and 18 seconds. How long is the video (in seconds)?
  11. 11.⏱️ A 74-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  12. 12.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  13. 13.⏱️ How many seconds are in 1 minute? (a) 60 (b) 30 (c) 100 (d) 10
  14. 14.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  15. 15.⏱️ A video has three clips of 12, 11 and 16 seconds. How long is the video (in seconds)?
  16. 16.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  17. 17.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  18. 18.⏱️ How many seconds is 4 minutes 34 seconds?
  19. 19.⏱️ A 30-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  20. 20.⏱️ A video has three clips of 12, 29 and 28 seconds. How long is the video (in seconds)?
  21. 21.⏱️ A video has three clips of 43, 13 and 26 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A video has three clips of 28, 49 and 58 seconds. How long is the video (in seconds)?
  23. 23.⏱️ A video is 250 seconds long. How long is that in minutes and seconds? (a) 2 min 50 s (b) 4 min 10 s (c) 5 min 10 s (d) 4 min 40 s
  24. 24.⏱️ A video has three clips of 54, 31 and 17 seconds. How long is the video (in seconds)?
  25. 25.⏱️ How many seconds is 7 minutes 32 seconds?
  26. 26.⏱️ A video is 80 seconds long. How long is that in minutes and seconds? (a) 2 min 20 s (b) 3 min 20 s (c) 1 min 50 s (d) 1 min 20 s
  27. 27.⏱️ An 18-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  28. 28.⏱️ Your video must be 60 seconds long. Your clips add up to 11 seconds. How many more seconds of video do you need?
  29. 29.⏱️ A 44-second clip is sped up to 2× speed. 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.⏱️ An 87-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  32. 32.⏱️ How many seconds is 9 minutes 49 seconds?
  33. 33.⏱️ A video is 510 seconds long. How long is that in minutes and seconds? (a) 5 min 10 s (b) 8 min 0 s (c) 8 min 30 s (d) 9 min 30 s
  34. 34.⏱️ How many seconds is 9 minutes 12 seconds?
  35. 35.⏱️ Your video must be 90 seconds long. Your clips add up to 57 seconds. How many more seconds of video do you need?
  36. 36.⏱️ An 11-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  37. 37.⏱️ A video has three clips of 24, 51 and 43 seconds. How long is the video (in seconds)?
  38. 38.⏱️ Your video must be 180 seconds long. Your clips add up to 49 seconds. How many more seconds of video do you need?
  39. 39.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  40. 40.⏱️ A video is 340 seconds long. How long is that in minutes and seconds? (a) 5 min 10 s (b) 5 min 40 s (c) 3 min 40 s (d) 6 min 40 s

Answer key

  1. 64
  2. 5
  3. 290
  4. 28
  5. the sum of the clips
  6. half as long
  7. 52
  8. 164
  9. 5
  10. 51
  11. 37
  12. 36
  13. 60
  14. 14
  15. 39
  16. 8
  17. 48
  18. 274
  19. 10
  20. 69
  21. 82
  22. 135
  23. 4 min 10 s
  24. 102
  25. 452
  26. 1 min 20 s
  27. 9
  28. 49
  29. 22
  30. 16
  31. 29
  32. 589
  33. 8 min 30 s
  34. 552
  35. 33
  36. 22
  37. 118
  38. 131
  39. 18
  40. 5 min 40 s

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