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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 341 · 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.⏱️ A 20-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  2. 2.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  3. 3.⏱️ How many seconds are in 1 minute? (a) 100 (b) 30 (c) 10 (d) 60
  4. 4.⏱️ Speeding a clip up to 2× makes it … (a) twice as long (b) half as long (c) the same length (d) silent
  5. 5.⏱️ A 140-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  6. 6.⏱️ A video has three clips of 59, 52 and 22 seconds. How long is the video (in seconds)?
  7. 7.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  8. 8.⏱️ A video is 575 seconds long. How long is that in minutes and seconds? (a) 5 min 75 s (b) 9 min 5 s (c) 9 min 35 s (d) 10 min 35 s
  9. 9.⏱️ A 76-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  10. 10.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  11. 11.⏱️ Your video must be 60 seconds long. Your clips add up to 9 seconds. How many more seconds of video do you need?
  12. 12.⏱️ A video is 245 seconds long. How long is that in minutes and seconds? (a) 4 min 5 s (b) 5 min 5 s (c) 2 min 45 s (d) 4 min 35 s
  13. 13.⏱️ A 28-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  14. 14.⏱️ A video has three clips of 30, 20 and 19 seconds. How long is the video (in seconds)?
  15. 15.⏱️ How many seconds is 9 minutes 33 seconds?
  16. 16.⏱️ A video has three clips of 28, 26 and 21 seconds. How long is the video (in seconds)?
  17. 17.⏱️ Your video must be 90 seconds long. Your clips add up to 33 seconds. How many more seconds of video do you need?
  18. 18.⏱️ A video has three clips of 14, 40 and 26 seconds. How long is the video (in seconds)?
  19. 19.⏱️ How many seconds is 7 minutes 24 seconds?
  20. 20.⏱️ A 78-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 96 seconds. How many more seconds of video do you need?
  22. 22.⏱️ A video has three clips of 17, 13 and 52 seconds. How long is the video (in seconds)?
  23. 23.⏱️ A 100-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  24. 24.⏱️ Your video must be 60 seconds long. Your clips add up to 6 seconds. How many more seconds of video do you need?
  25. 25.⏱️ How many seconds is 4 minutes 18 seconds?
  26. 26.⏱️ Your video must be 180 seconds long. Your clips add up to 143 seconds. How many more seconds of video do you need?
  27. 27.⏱️ A video has three clips of 51, 53 and 22 seconds. How long is the video (in seconds)?
  28. 28.⏱️ 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
  29. 29.⏱️ An 11-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  30. 30.⏱️ A 112-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  31. 31.⏱️ How many seconds is 3 minutes 54 seconds?
  32. 32.⏱️ How many seconds is 2 minutes 59 seconds?
  33. 33.⏱️ How many seconds is 5 minutes 30 seconds?
  34. 34.⏱️ A 120-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  35. 35.⏱️ A video has three clips of 13, 28 and 22 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A video has three clips of 18, 54 and 15 seconds. How long is the video (in seconds)?
  37. 37.⏱️ Your video must be 120 seconds long. Your clips add up to 61 seconds. How many more seconds of video do you need?
  38. 38.⏱️ A 10-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  39. 39.⏱️ A video is 430 seconds long. How long is that in minutes and seconds? (a) 8 min 10 s (b) 7 min 40 s (c) 4 min 30 s (d) 7 min 10 s
  40. 40.⏱️ How many seconds is 7 minutes 38 seconds?

Answer key

  1. 5
  2. 56
  3. 60
  4. half as long
  5. 35
  6. 133
  7. 42
  8. 9 min 35 s
  9. 38
  10. 14
  11. 51
  12. 4 min 5 s
  13. 7
  14. 69
  15. 573
  16. 75
  17. 57
  18. 80
  19. 444
  20. 39
  21. 24
  22. 82
  23. 25
  24. 54
  25. 258
  26. 37
  27. 126
  28. the sum of the clips
  29. 22
  30. 28
  31. 234
  32. 179
  33. 330
  34. 30
  35. 63
  36. 87
  37. 59
  38. 5
  39. 7 min 10 s
  40. 458

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