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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 212 · 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 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  2. 2.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  3. 3.⏱️ How many seconds is 9 minutes 48 seconds?
  4. 4.⏱️ How many seconds are in 1 minute? (a) 30 (b) 10 (c) 100 (d) 60
  5. 5.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) silent (c) twice as long (d) half as long
  6. 6.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) always 1 minute (c) the shortest clip (d) the sum of the clips
  7. 7.⏱️ Your video must be 120 seconds long. Your clips add up to 9 seconds. How many more seconds of video do you need?
  8. 8.⏱️ Your video must be 90 seconds long. Your clips add up to 78 seconds. How many more seconds of video do you need?
  9. 9.⏱️ How many seconds is 7 minutes 28 seconds?
  10. 10.⏱️ How many seconds is 7 minutes 32 seconds?
  11. 11.⏱️ A 74-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  12. 12.⏱️ Your video must be 60 seconds long. Your clips add up to 42 seconds. How many more seconds of video do you need?
  13. 13.⏱️ A video has three clips of 35, 52 and 17 seconds. How long is the video (in seconds)?
  14. 14.⏱️ How many seconds is 2 minutes 53 seconds?
  15. 15.⏱️ Your video must be 180 seconds long. Your clips add up to 67 seconds. How many more seconds of video do you need?
  16. 16.⏱️ A video is 390 seconds long. How long is that in minutes and seconds? (a) 7 min 30 s (b) 6 min 30 s (c) 3 min 90 s (d) 6 min 0 s
  17. 17.⏱️ A video is 480 seconds long. How long is that in minutes and seconds? (a) 9 min 0 s (b) 4 min 80 s (c) 8 min 30 s (d) 8 min 0 s
  18. 18.⏱️ An 8-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  19. 19.⏱️ How many seconds is 1 minute 41 seconds?
  20. 20.⏱️ How many seconds is 5 minutes 11 seconds?
  21. 21.⏱️ How many seconds is 8 minutes 25 seconds?
  22. 22.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  23. 23.⏱️ A video has three clips of 20, 16 and 9 seconds. How long is the video (in seconds)?
  24. 24.⏱️ A 93-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  25. 25.⏱️ A 116-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  26. 26.⏱️ A video is 100 seconds long. How long is that in minutes and seconds? (a) 2 min 40 s (b) 1 min 40 s (c) 1 min 0 s (d) 1 min 10 s
  27. 27.⏱️ A 99-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  28. 28.⏱️ How many seconds is 6 minutes 57 seconds?
  29. 29.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  30. 30.⏱️ A video is 105 seconds long. How long is that in minutes and seconds? (a) 2 min 45 s (b) 1 min 45 s (c) 1 min 15 s (d) 1 min 5 s
  31. 31.⏱️ A 28-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  32. 32.⏱️ A video is 460 seconds long. How long is that in minutes and seconds? (a) 7 min 10 s (b) 8 min 40 s (c) 7 min 40 s (d) 4 min 60 s
  33. 33.⏱️ Your video must be 180 seconds long. Your clips add up to 115 seconds. How many more seconds of video do you need?
  34. 34.⏱️ Your video must be 180 seconds long. Your clips add up to 48 seconds. How many more seconds of video do you need?
  35. 35.⏱️ A video has three clips of 11, 23 and 51 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  37. 37.⏱️ A video is 555 seconds long. How long is that in minutes and seconds? (a) 9 min 45 s (b) 9 min 15 s (c) 5 min 55 s (d) 10 min 15 s
  38. 38.⏱️ A video is 585 seconds long. How long is that in minutes and seconds? (a) 5 min 85 s (b) 10 min 45 s (c) 9 min 45 s (d) 9 min 15 s
  39. 39.⏱️ A 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  40. 40.⏱️ How many seconds is 6 minutes 38 seconds?

Answer key

  1. 14
  2. 50
  3. 588
  4. 60
  5. half as long
  6. the sum of the clips
  7. 111
  8. 12
  9. 448
  10. 452
  11. 37
  12. 18
  13. 104
  14. 173
  15. 113
  16. 6 min 30 s
  17. 8 min 0 s
  18. 16
  19. 101
  20. 311
  21. 505
  22. 60
  23. 45
  24. 31
  25. 29
  26. 1 min 40 s
  27. 33
  28. 417
  29. 12
  30. 1 min 45 s
  31. 7
  32. 7 min 40 s
  33. 65
  34. 132
  35. 85
  36. 40
  37. 9 min 15 s
  38. 9 min 45 s
  39. 30
  40. 398

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