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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 304 · 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 video has three clips of 29, 53 and 31 seconds. How long is the video (in seconds)?
  2. 2.⏱️ Your video must be 90 seconds long. Your clips add up to 6 seconds. How many more seconds of video do you need?
  3. 3.⏱️ A video is 385 seconds long. How long is that in minutes and seconds? (a) 3 min 85 s (b) 7 min 25 s (c) 6 min 25 s (d) 6 min 55 s
  4. 4.⏱️ A video has three clips of 56, 45 and 15 seconds. How long is the video (in seconds)?
  5. 5.⏱️ A video has three clips of 49, 18 and 50 seconds. How long is the video (in seconds)?
  6. 6.⏱️ A 48-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  7. 7.⏱️ A 54-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  8. 8.⏱️ How many seconds is 1 minute 9 seconds?
  9. 9.⏱️ Your video must be 90 seconds long. Your clips add up to 18 seconds. How many more seconds of video do you need?
  10. 10.⏱️ A video has three clips of 23, 35 and 39 seconds. How long is the video (in seconds)?
  11. 11.⏱️ A 26-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  12. 12.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  13. 13.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) twice as long (c) silent (d) the same length
  14. 14.⏱️ A video has three clips of 34, 8 and 46 seconds. How long is the video (in seconds)?
  15. 15.⏱️ 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
  16. 16.⏱️ A video has three clips of 32, 60 and 31 seconds. How long is the video (in seconds)?
  17. 17.⏱️ A video has three clips of 58, 29 and 5 seconds. How long is the video (in seconds)?
  18. 18.⏱️ Your video must be 60 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
  19. 19.⏱️ How many seconds is 3 minutes 58 seconds?
  20. 20.⏱️ A video has three clips of 32, 29 and 58 seconds. How long is the video (in seconds)?
  21. 21.⏱️ A 32-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  22. 22.⏱️ A video has three clips of 48, 44 and 5 seconds. How long is the video (in seconds)?
  23. 23.⏱️ How many seconds is 3 minutes 11 seconds?
  24. 24.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  25. 25.⏱️ Your video must be 90 seconds long. Your clips add up to 83 seconds. How many more seconds of video do you need?
  26. 26.⏱️ A 99-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  27. 27.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  28. 28.⏱️ A video is 380 seconds long. How long is that in minutes and seconds? (a) 6 min 50 s (b) 3 min 80 s (c) 7 min 20 s (d) 6 min 20 s
  29. 29.⏱️ How many seconds are in 1 minute? (a) 100 (b) 10 (c) 60 (d) 30
  30. 30.⏱️ Your video must be 90 seconds long. Your clips add up to 81 seconds. How many more seconds of video do you need?
  31. 31.⏱️ A 48-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  32. 32.⏱️ 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) 4 min 45 s (d) 7 min 55 s
  33. 33.⏱️ A video is 505 seconds long. How long is that in minutes and seconds? (a) 9 min 25 s (b) 8 min 25 s (c) 5 min 5 s (d) 8 min 55 s
  34. 34.⏱️ A video is 315 seconds long. How long is that in minutes and seconds? (a) 5 min 45 s (b) 6 min 15 s (c) 5 min 15 s (d) 3 min 15 s
  35. 35.⏱️ How many seconds is 9 minutes 9 seconds?
  36. 36.⏱️ How many seconds is 6 minutes 31 seconds?
  37. 37.⏱️ An 87-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  38. 38.⏱️ How many seconds is 4 minutes 12 seconds?
  39. 39.⏱️ A 24-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  40. 40.⏱️ A 20-second clip is sped up to 4× speed. How long does it last now (in seconds)?

Answer key

  1. 113
  2. 84
  3. 6 min 25 s
  4. 116
  5. 117
  6. 16
  7. 27
  8. 69
  9. 72
  10. 97
  11. 13
  12. 56
  13. half as long
  14. 88
  15. the sum of the clips
  16. 123
  17. 92
  18. 53
  19. 238
  20. 119
  21. 16
  22. 97
  23. 191
  24. 50
  25. 7
  26. 33
  27. 24
  28. 6 min 20 s
  29. 60
  30. 9
  31. 24
  32. 7 min 25 s
  33. 8 min 25 s
  34. 5 min 15 s
  35. 549
  36. 391
  37. 29
  38. 252
  39. 6
  40. 5

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