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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 350 · 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.⏱️ Your video must be 90 seconds long. Your clips add up to 67 seconds. How many more seconds of video do you need?
  2. 2.⏱️ A video has three clips of 47, 52 and 43 seconds. How long is the video (in seconds)?
  3. 3.⏱️ Your video must be 90 seconds long. Your clips add up to 59 seconds. How many more seconds of video do you need?
  4. 4.⏱️ A 19-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  5. 5.⏱️ A 140-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  6. 6.⏱️ How many seconds is 1 minute 38 seconds?
  7. 7.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  8. 8.⏱️ A video has three clips of 36, 48 and 5 seconds. How long is the video (in seconds)?
  9. 9.⏱️ How many seconds is 1 minute 30 seconds?
  10. 10.⏱️ How many seconds are in 1 minute? (a) 30 (b) 100 (c) 10 (d) 60
  11. 11.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) always 1 minute (c) the sum of the clips (d) the shortest clip
  12. 12.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  13. 13.⏱️ A video has three clips of 14, 36 and 41 seconds. How long is the video (in seconds)?
  14. 14.⏱️ How many seconds is 5 minutes 38 seconds?
  15. 15.⏱️ A 52-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  16. 16.⏱️ Your video must be 60 seconds long. Your clips add up to 22 seconds. How many more seconds of video do you need?
  17. 17.⏱️ How many seconds is 5 minutes 8 seconds?
  18. 18.⏱️ A 152-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  19. 19.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  20. 20.⏱️ How many seconds is 4 minutes 37 seconds?
  21. 21.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  22. 22.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) silent (c) twice as long (d) half as long
  23. 23.⏱️ 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
  24. 24.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  25. 25.⏱️ A video has three clips of 50, 45 and 10 seconds. How long is the video (in seconds)?
  26. 26.⏱️ A video has three clips of 33, 47 and 31 seconds. How long is the video (in seconds)?
  27. 27.⏱️ How many seconds is 1 minute 40 seconds?
  28. 28.⏱️ A 14-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 22, 33 and 37 seconds. How long is the video (in seconds)?
  30. 30.⏱️ Your video must be 90 seconds long. Your clips add up to 6 seconds. How many more seconds of video do you need?
  31. 31.⏱️ Your video must be 120 seconds long. Your clips add up to 18 seconds. How many more seconds of video do you need?
  32. 32.⏱️ How many seconds is 2 minutes 15 seconds?
  33. 33.⏱️ How many seconds is 7 minutes 7 seconds?
  34. 34.⏱️ Your video must be 120 seconds long. Your clips add up to 53 seconds. How many more seconds of video do you need?
  35. 35.⏱️ Your video must be 60 seconds long. Your clips add up to 9 seconds. How many more seconds of video do you need?
  36. 36.⏱️ Your video must be 60 seconds long. Your clips add up to 48 seconds. How many more seconds of video do you need?
  37. 37.⏱️ A video has three clips of 34, 20 and 12 seconds. How long is the video (in seconds)?
  38. 38.⏱️ A 34-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  39. 39.⏱️ A video has three clips of 22, 37 and 13 seconds. How long is the video (in seconds)?
  40. 40.⏱️ How many seconds is 3 minutes 22 seconds?

Answer key

  1. 23
  2. 142
  3. 31
  4. 38
  5. 35
  6. 98
  7. 32
  8. 89
  9. 90
  10. 60
  11. the sum of the clips
  12. 60
  13. 91
  14. 338
  15. 26
  16. 38
  17. 308
  18. 38
  19. 10
  20. 277
  21. 20
  22. half as long
  23. 8 min 10 s
  24. 34
  25. 105
  26. 111
  27. 100
  28. 28
  29. 92
  30. 84
  31. 102
  32. 135
  33. 427
  34. 67
  35. 51
  36. 12
  37. 66
  38. 17
  39. 72
  40. 202

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