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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 291 · 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 26-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  2. 2.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  3. 3.⏱️ A video has three clips of 55, 9 and 7 seconds. How long is the video (in seconds)?
  4. 4.⏱️ How many seconds is 3 minutes 12 seconds?
  5. 5.⏱️ A 96-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  6. 6.⏱️ Your video must be 180 seconds long. Your clips add up to 57 seconds. How many more seconds of video do you need?
  7. 7.⏱️ How many seconds is 2 minutes 29 seconds?
  8. 8.⏱️ How many seconds is 4 minutes 35 seconds?
  9. 9.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) silent (c) twice as long (d) half as long
  10. 10.⏱️ How many seconds is 6 minutes 46 seconds?
  11. 11.⏱️ Your video must be 180 seconds long. Your clips add up to 168 seconds. How many more seconds of video do you need?
  12. 12.⏱️ A video is 365 seconds long. How long is that in minutes and seconds? (a) 3 min 65 s (b) 6 min 35 s (c) 6 min 5 s (d) 7 min 5 s
  13. 13.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  14. 14.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  15. 15.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) the shortest clip (c) the sum of the clips (d) always 1 minute
  16. 16.⏱️ Your video must be 90 seconds long. Your clips add up to 42 seconds. How many more seconds of video do you need?
  17. 17.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  18. 18.⏱️ Your video must be 90 seconds long. Your clips add up to 32 seconds. How many more seconds of video do you need?
  19. 19.⏱️ A video is 445 seconds long. How long is that in minutes and seconds? (a) 7 min 55 s (b) 8 min 25 s (c) 4 min 45 s (d) 7 min 25 s
  20. 20.⏱️ A video has three clips of 9, 18 and 18 seconds. How long is the video (in seconds)?
  21. 21.⏱️ A video has three clips of 40, 38 and 52 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  23. 23.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  24. 24.⏱️ How many seconds is 9 minutes 24 seconds?
  25. 25.⏱️ How many seconds is 1 minute 12 seconds?
  26. 26.⏱️ How many seconds are in 1 minute? (a) 60 (b) 10 (c) 100 (d) 30
  27. 27.⏱️ A video has three clips of 47, 56 and 19 seconds. How long is the video (in seconds)?
  28. 28.⏱️ A 132-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  29. 29.⏱️ Your video must be 180 seconds long. Your clips add up to 131 seconds. How many more seconds of video do you need?
  30. 30.⏱️ A video has three clips of 39, 16 and 50 seconds. How long is the video (in seconds)?
  31. 31.⏱️ A 27-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  32. 32.⏱️ A 32-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  33. 33.⏱️ How many seconds is 9 minutes 40 seconds?
  34. 34.⏱️ A 28-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  35. 35.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  36. 36.⏱️ A video is 555 seconds long. How long is that in minutes and seconds? (a) 10 min 15 s (b) 9 min 45 s (c) 9 min 15 s (d) 5 min 55 s
  37. 37.⏱️ Your video must be 120 seconds long. Your clips add up to 81 seconds. How many more seconds of video do you need?
  38. 38.⏱️ A 21-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  39. 39.⏱️ How many seconds is 2 minutes 21 seconds?
  40. 40.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?

Answer key

  1. 52
  2. 60
  3. 71
  4. 192
  5. 32
  6. 123
  7. 149
  8. 275
  9. half as long
  10. 406
  11. 12
  12. 6 min 5 s
  13. 42
  14. 20
  15. the sum of the clips
  16. 48
  17. 12
  18. 58
  19. 7 min 25 s
  20. 45
  21. 130
  22. 14
  23. 40
  24. 564
  25. 72
  26. 60
  27. 122
  28. 33
  29. 49
  30. 105
  31. 54
  32. 8
  33. 580
  34. 7
  35. 32
  36. 9 min 15 s
  37. 39
  38. 7
  39. 141
  40. 58

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