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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 320 · 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 72-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  2. 2.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) half as long (c) silent (d) twice as long
  3. 3.⏱️ A video has three clips of 44, 47 and 52 seconds. How long is the video (in seconds)?
  4. 4.⏱️ Your video must be 120 seconds long. Your clips add up to 33 seconds. How many more seconds of video do you need?
  5. 5.⏱️ A video has three clips of 26, 27 and 12 seconds. How long is the video (in seconds)?
  6. 6.⏱️ A 14-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  7. 7.⏱️ How many seconds is 3 minutes 21 seconds?
  8. 8.⏱️ A video has three clips of 34, 5 and 10 seconds. How long is the video (in seconds)?
  9. 9.⏱️ Your video must be 60 seconds long. Your clips add up to 53 seconds. How many more seconds of video do you need?
  10. 10.⏱️ How many seconds is 5 minutes 48 seconds?
  11. 11.⏱️ A video has three clips of 12, 29 and 41 seconds. How long is the video (in seconds)?
  12. 12.⏱️ A 19-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  13. 13.⏱️ How many seconds is 8 minutes 4 seconds?
  14. 14.⏱️ A video is 255 seconds long. How long is that in minutes and seconds? (a) 4 min 45 s (b) 5 min 15 s (c) 2 min 55 s (d) 4 min 15 s
  15. 15.⏱️ Your video must be 60 seconds long. Your clips add up to 13 seconds. How many more seconds of video do you need?
  16. 16.⏱️ A 52-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  17. 17.⏱️ A video has three clips of 55, 45 and 51 seconds. How long is the video (in seconds)?
  18. 18.⏱️ How many seconds is 8 minutes 30 seconds?
  19. 19.⏱️ How many seconds is 6 minutes 17 seconds?
  20. 20.⏱️ How many seconds are in 1 minute? (a) 60 (b) 100 (c) 10 (d) 30
  21. 21.⏱️ A video has three clips of 47, 23 and 21 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A video has three clips of 43, 14 and 21 seconds. How long is the video (in seconds)?
  23. 23.⏱️ A 100-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  24. 24.⏱️ Your video must be 60 seconds long. Your clips add up to 44 seconds. How many more seconds of video do you need?
  25. 25.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) the longest clip (c) always 1 minute (d) the shortest clip
  26. 26.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  27. 27.⏱️ A video has three clips of 53, 18 and 22 seconds. How long is the video (in seconds)?
  28. 28.⏱️ A 27-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  29. 29.⏱️ A video has three clips of 32, 31 and 47 seconds. How long is the video (in seconds)?
  30. 30.⏱️ How many seconds is 4 minutes 37 seconds?
  31. 31.⏱️ A 112-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  32. 32.⏱️ Your video must be 60 seconds long. Your clips add up to 54 seconds. How many more seconds of video do you need?
  33. 33.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  34. 34.⏱️ Your video must be 90 seconds long. Your clips add up to 71 seconds. How many more seconds of video do you need?
  35. 35.⏱️ How many seconds is 9 minutes 15 seconds?
  36. 36.⏱️ How many seconds is 1 minute 20 seconds?
  37. 37.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  38. 38.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  39. 39.⏱️ Your video must be 60 seconds long. Your clips add up to 50 seconds. How many more seconds of video do you need?
  40. 40.⏱️ A 60-second clip is sped up to 4× speed. How long does it last now (in seconds)?

Answer key

  1. 24
  2. half as long
  3. 143
  4. 87
  5. 65
  6. 7
  7. 201
  8. 49
  9. 7
  10. 348
  11. 82
  12. 38
  13. 484
  14. 4 min 15 s
  15. 47
  16. 26
  17. 151
  18. 510
  19. 377
  20. 60
  21. 91
  22. 78
  23. 25
  24. 16
  25. the sum of the clips
  26. 24
  27. 93
  28. 54
  29. 110
  30. 277
  31. 28
  32. 6
  33. 28
  34. 19
  35. 555
  36. 80
  37. 20
  38. 18
  39. 10
  40. 15

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