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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 298 · 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 50 seconds. How many more seconds of video do you need?
  2. 2.⏱️ A video has three clips of 22, 59 and 16 seconds. How long is the video (in seconds)?
  3. 3.⏱️ How many seconds are in 1 minute? (a) 30 (b) 60 (c) 100 (d) 10
  4. 4.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  5. 5.⏱️ A 36-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  6. 6.⏱️ A video has three clips of 33, 49 and 29 seconds. How long is the video (in seconds)?
  7. 7.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  8. 8.⏱️ A 144-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  9. 9.⏱️ A 76-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  10. 10.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) silent (c) the same length (d) twice as long
  11. 11.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  12. 12.⏱️ A 78-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  13. 13.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the sum of the clips (c) the longest clip (d) always 1 minute
  14. 14.⏱️ How many seconds is 6 minutes 39 seconds?
  15. 15.⏱️ How many seconds is 6 minutes 12 seconds?
  16. 16.⏱️ How many seconds is 3 minutes 8 seconds?
  17. 17.⏱️ Your video must be 180 seconds long. Your clips add up to 51 seconds. How many more seconds of video do you need?
  18. 18.⏱️ A video has three clips of 5, 35 and 13 seconds. How long is the video (in seconds)?
  19. 19.⏱️ Your video must be 60 seconds long. Your clips add up to 14 seconds. How many more seconds of video do you need?
  20. 20.⏱️ Your video must be 90 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?
  21. 21.⏱️ Your video must be 180 seconds long. Your clips add up to 6 seconds. How many more seconds of video do you need?
  22. 22.⏱️ How many seconds is 6 minutes 38 seconds?
  23. 23.⏱️ A video has three clips of 51, 9 and 5 seconds. How long is the video (in seconds)?
  24. 24.⏱️ An 87-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  25. 25.⏱️ A video is 130 seconds long. How long is that in minutes and seconds? (a) 2 min 40 s (b) 2 min 10 s (c) 1 min 30 s (d) 3 min 10 s
  26. 26.⏱️ Your video must be 120 seconds long. Your clips add up to 76 seconds. How many more seconds of video do you need?
  27. 27.⏱️ A video is 120 seconds long. How long is that in minutes and seconds? (a) 3 min 0 s (b) 1 min 20 s (c) 2 min 30 s (d) 2 min 0 s
  28. 28.⏱️ A video is 320 seconds long. How long is that in minutes and seconds? (a) 3 min 20 s (b) 5 min 50 s (c) 6 min 20 s (d) 5 min 20 s
  29. 29.⏱️ How many seconds is 3 minutes 53 seconds?
  30. 30.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  31. 31.⏱️ Your video must be 120 seconds long. Your clips add up to 79 seconds. How many more seconds of video do you need?
  32. 32.⏱️ Your video must be 60 seconds long. Your clips add up to 29 seconds. How many more seconds of video do you need?
  33. 33.⏱️ A video has three clips of 23, 6 and 22 seconds. How long is the video (in seconds)?
  34. 34.⏱️ How many seconds is 9 minutes 56 seconds?
  35. 35.⏱️ A video is 210 seconds long. How long is that in minutes and seconds? (a) 3 min 30 s (b) 4 min 30 s (c) 3 min 0 s (d) 2 min 10 s
  36. 36.⏱️ A video has three clips of 34, 23 and 57 seconds. How long is the video (in seconds)?
  37. 37.⏱️ A video is 220 seconds long. How long is that in minutes and seconds? (a) 4 min 40 s (b) 2 min 20 s (c) 3 min 10 s (d) 3 min 40 s
  38. 38.⏱️ A 16-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  39. 39.⏱️ A 102-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  40. 40.⏱️ How many seconds is 1 minute 11 seconds?

Answer key

  1. 40
  2. 97
  3. 60
  4. 20
  5. 18
  6. 111
  7. 26
  8. 36
  9. 19
  10. half as long
  11. 24
  12. 26
  13. the sum of the clips
  14. 399
  15. 372
  16. 188
  17. 129
  18. 53
  19. 46
  20. 74
  21. 174
  22. 398
  23. 65
  24. 29
  25. 2 min 10 s
  26. 44
  27. 2 min 0 s
  28. 5 min 20 s
  29. 233
  30. 34
  31. 41
  32. 31
  33. 51
  34. 596
  35. 3 min 30 s
  36. 114
  37. 3 min 40 s
  38. 8
  39. 34
  40. 71

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