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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 98 · 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 68-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  2. 2.⏱️ A 99-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  3. 3.⏱️ A 93-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  4. 4.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) half as long (c) the same length (d) twice as long
  5. 5.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  6. 6.⏱️ A video has three clips of 8, 20 and 29 seconds. How long is the video (in seconds)?
  7. 7.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  8. 8.⏱️ How many seconds is 6 minutes 57 seconds?
  9. 9.⏱️ How many seconds is 7 minutes 17 seconds?
  10. 10.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  11. 11.⏱️ How many seconds are in 1 minute? (a) 10 (b) 60 (c) 100 (d) 30
  12. 12.⏱️ Your video must be 90 seconds long. Your clips add up to 52 seconds. How many more seconds of video do you need?
  13. 13.⏱️ A 12-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  14. 14.⏱️ A video is 185 seconds long. How long is that in minutes and seconds? (a) 1 min 85 s (b) 3 min 35 s (c) 4 min 5 s (d) 3 min 5 s
  15. 15.⏱️ A video has three clips of 7, 12 and 20 seconds. How long is the video (in seconds)?
  16. 16.⏱️ How many seconds is 4 minutes 5 seconds?
  17. 17.⏱️ How many seconds is 4 minutes 41 seconds?
  18. 18.⏱️ A video is 365 seconds long. How long is that in minutes and seconds? (a) 3 min 65 s (b) 6 min 5 s (c) 6 min 35 s (d) 7 min 5 s
  19. 19.⏱️ How many seconds is 8 minutes 8 seconds?
  20. 20.⏱️ Your video must be 180 seconds long. Your clips add up to 70 seconds. How many more seconds of video do you need?
  21. 21.⏱️ A video has three clips of 26, 28 and 51 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A video has three clips of 46, 10 and 45 seconds. How long is the video (in seconds)?
  23. 23.⏱️ A video has three clips of 21, 53 and 34 seconds. How long is the video (in seconds)?
  24. 24.⏱️ A video has three clips of 60, 12 and 15 seconds. How long is the video (in seconds)?
  25. 25.⏱️ Your video must be 180 seconds long. Your clips add up to 90 seconds. How many more seconds of video do you need?
  26. 26.⏱️ A video has three clips of 46, 36 and 5 seconds. How long is the video (in seconds)?
  27. 27.⏱️ An 18-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  28. 28.⏱️ A video has three clips of 46, 46 and 35 seconds. How long is the video (in seconds)?
  29. 29.⏱️ A video has three clips of 9, 58 and 7 seconds. How long is the video (in seconds)?
  30. 30.⏱️ An 18-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  31. 31.⏱️ A 40-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  32. 32.⏱️ Your video must be 60 seconds long. Your clips add up to 44 seconds. How many more seconds of video do you need?
  33. 33.⏱️ A video has three clips of 30, 40 and 42 seconds. How long is the video (in seconds)?
  34. 34.⏱️ How many seconds is 2 minutes 5 seconds?
  35. 35.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  36. 36.⏱️ A video is 575 seconds long. How long is that in minutes and seconds? (a) 9 min 35 s (b) 5 min 75 s (c) 10 min 35 s (d) 9 min 5 s
  37. 37.⏱️ How many seconds is 6 minutes 50 seconds?
  38. 38.⏱️ A 60-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  39. 39.⏱️ How many seconds is 2 minutes 6 seconds?
  40. 40.⏱️ How many seconds is 5 minutes 59 seconds?

Answer key

  1. 17
  2. 33
  3. 31
  4. half as long
  5. 60
  6. 57
  7. 20
  8. 417
  9. 437
  10. 8
  11. 60
  12. 38
  13. 6
  14. 3 min 5 s
  15. 39
  16. 245
  17. 281
  18. 6 min 5 s
  19. 488
  20. 110
  21. 105
  22. 101
  23. 108
  24. 87
  25. 90
  26. 87
  27. 9
  28. 127
  29. 74
  30. 6
  31. 20
  32. 16
  33. 112
  34. 125
  35. 50
  36. 9 min 35 s
  37. 410
  38. 15
  39. 126
  40. 359

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