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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 122 · 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 76-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  2. 2.⏱️ Your video must be 90 seconds long. Your clips add up to 71 seconds. How many more seconds of video do you need?
  3. 3.⏱️ Your video must be 90 seconds long. Your clips add up to 79 seconds. How many more seconds of video do you need?
  4. 4.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) silent (c) twice as long (d) the same length
  5. 5.⏱️ A 72-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  6. 6.⏱️ A video has three clips of 52, 22 and 16 seconds. How long is the video (in seconds)?
  7. 7.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  8. 8.⏱️ Your video must be 90 seconds long. Your clips add up to 24 seconds. How many more seconds of video do you need?
  9. 9.⏱️ A video is 595 seconds long. How long is that in minutes and seconds? (a) 10 min 55 s (b) 9 min 25 s (c) 5 min 95 s (d) 9 min 55 s
  10. 10.⏱️ A 112-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  11. 11.⏱️ How many seconds is 1 minute 50 seconds?
  12. 12.⏱️ How many seconds is 6 minutes 47 seconds?
  13. 13.⏱️ How many seconds is 6 minutes 51 seconds?
  14. 14.⏱️ A video is 490 seconds long. How long is that in minutes and seconds? (a) 4 min 90 s (b) 8 min 10 s (c) 8 min 40 s (d) 9 min 10 s
  15. 15.⏱️ A video is 520 seconds long. How long is that in minutes and seconds? (a) 9 min 40 s (b) 8 min 10 s (c) 5 min 20 s (d) 8 min 40 s
  16. 16.⏱️ How many seconds is 9 minutes 44 seconds?
  17. 17.⏱️ A video has three clips of 60, 58 and 55 seconds. How long is the video (in seconds)?
  18. 18.⏱️ A 46-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  19. 19.⏱️ A 54-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  20. 20.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  21. 21.⏱️ A 148-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  22. 22.⏱️ How many seconds is 7 minutes 10 seconds?
  23. 23.⏱️ A video is 435 seconds long. How long is that in minutes and seconds? (a) 8 min 15 s (b) 7 min 45 s (c) 7 min 15 s (d) 4 min 35 s
  24. 24.⏱️ A video has three clips of 47, 32 and 14 seconds. How long is the video (in seconds)?
  25. 25.⏱️ Your video must be 60 seconds long. Your clips add up to 15 seconds. How many more seconds of video do you need?
  26. 26.⏱️ A video has three clips of 11, 8 and 33 seconds. How long is the video (in seconds)?
  27. 27.⏱️ When you put clips one after another, the video length is … (a) always 1 minute (b) the shortest clip (c) the longest clip (d) the sum of the clips
  28. 28.⏱️ How many seconds are in 1 minute? (a) 10 (b) 100 (c) 60 (d) 30
  29. 29.⏱️ How many seconds is 4 minutes 13 seconds?
  30. 30.⏱️ A video has three clips of 49, 15 and 20 seconds. How long is the video (in seconds)?
  31. 31.⏱️ A 10-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  32. 32.⏱️ How many seconds is 8 minutes 20 seconds?
  33. 33.⏱️ How many seconds is 1 minute 30 seconds?
  34. 34.⏱️ How many seconds is 6 minutes 26 seconds?
  35. 35.⏱️ A 76-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  36. 36.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  37. 37.⏱️ Your video must be 120 seconds long. Your clips add up to 83 seconds. How many more seconds of video do you need?
  38. 38.⏱️ A video is 155 seconds long. How long is that in minutes and seconds? (a) 3 min 35 s (b) 1 min 55 s (c) 2 min 35 s (d) 2 min 5 s
  39. 39.⏱️ A video has three clips of 9, 23 and 52 seconds. How long is the video (in seconds)?
  40. 40.⏱️ How many seconds is 2 minutes 17 seconds?

Answer key

  1. 19
  2. 19
  3. 11
  4. half as long
  5. 18
  6. 90
  7. 58
  8. 66
  9. 9 min 55 s
  10. 28
  11. 110
  12. 407
  13. 411
  14. 8 min 10 s
  15. 8 min 40 s
  16. 584
  17. 173
  18. 23
  19. 27
  20. 60
  21. 37
  22. 430
  23. 7 min 15 s
  24. 93
  25. 45
  26. 52
  27. the sum of the clips
  28. 60
  29. 253
  30. 84
  31. 5
  32. 500
  33. 90
  34. 386
  35. 38
  36. 42
  37. 37
  38. 2 min 35 s
  39. 84
  40. 137

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