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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 278 · 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 15-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  2. 2.⏱️ Your video must be 180 seconds long. Your clips add up to 85 seconds. How many more seconds of video do you need?
  3. 3.⏱️ How many seconds is 3 minutes 41 seconds?
  4. 4.⏱️ A video has three clips of 34, 6 and 54 seconds. How long is the video (in seconds)?
  5. 5.⏱️ How many seconds is 2 minutes 5 seconds?
  6. 6.⏱️ A 32-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  7. 7.⏱️ A video is 150 seconds long. How long is that in minutes and seconds? (a) 3 min 30 s (b) 1 min 50 s (c) 2 min 30 s (d) 2 min 0 s
  8. 8.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  9. 9.⏱️ A video has three clips of 23, 36 and 31 seconds. How long is the video (in seconds)?
  10. 10.⏱️ How many seconds are in 1 minute? (a) 100 (b) 10 (c) 30 (d) 60
  11. 11.⏱️ A video has three clips of 56, 20 and 37 seconds. How long is the video (in seconds)?
  12. 12.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  13. 13.⏱️ A 90-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  14. 14.⏱️ A 16-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 sum of the clips (b) always 1 minute (c) the longest clip (d) the shortest clip
  16. 16.⏱️ How many seconds is 8 minutes 34 seconds?
  17. 17.⏱️ An 18-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  18. 18.⏱️ A video has three clips of 50, 33 and 29 seconds. How long is the video (in seconds)?
  19. 19.⏱️ How many seconds is 6 minutes 29 seconds?
  20. 20.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  21. 21.⏱️ How many seconds is 1 minute 15 seconds?
  22. 22.⏱️ A video is 550 seconds long. How long is that in minutes and seconds? (a) 5 min 50 s (b) 10 min 10 s (c) 9 min 10 s (d) 9 min 40 s
  23. 23.⏱️ A video has three clips of 41, 47 and 8 seconds. How long is the video (in seconds)?
  24. 24.⏱️ Speeding a clip up to 2× makes it … (a) twice as long (b) the same length (c) silent (d) half as long
  25. 25.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  26. 26.⏱️ How many seconds is 7 minutes 28 seconds?
  27. 27.⏱️ How many seconds is 2 minutes 22 seconds?
  28. 28.⏱️ Your video must be 120 seconds long. Your clips add up to 77 seconds. How many more seconds of video do you need?
  29. 29.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  30. 30.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  31. 31.⏱️ A 78-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  32. 32.⏱️ A 66-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  33. 33.⏱️ Your video must be 60 seconds long. Your clips add up to 36 seconds. How many more seconds of video do you need?
  34. 34.⏱️ A 54-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  35. 35.⏱️ How many seconds is 5 minutes 42 seconds?
  36. 36.⏱️ An 84-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  37. 37.⏱️ A video has three clips of 9, 52 and 38 seconds. How long is the video (in seconds)?
  38. 38.⏱️ A video has three clips of 55, 54 and 16 seconds. How long is the video (in seconds)?
  39. 39.⏱️ A video has three clips of 12, 27 and 12 seconds. How long is the video (in seconds)?
  40. 40.⏱️ An 80-second clip is sped up to 4× speed. How long does it last now (in seconds)?

Answer key

  1. 5
  2. 95
  3. 221
  4. 94
  5. 125
  6. 8
  7. 2 min 30 s
  8. 12
  9. 90
  10. 60
  11. 113
  12. 18
  13. 30
  14. 32
  15. the sum of the clips
  16. 514
  17. 6
  18. 112
  19. 389
  20. 48
  21. 75
  22. 9 min 10 s
  23. 96
  24. half as long
  25. 20
  26. 448
  27. 142
  28. 43
  29. 34
  30. 26
  31. 39
  32. 22
  33. 24
  34. 27
  35. 342
  36. 28
  37. 99
  38. 125
  39. 51
  40. 20

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