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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 45 · 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 180 seconds long. Your clips add up to 106 seconds. How many more seconds of video do you need?
  2. 2.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  3. 3.⏱️ A video is 540 seconds long. How long is that in minutes and seconds? (a) 9 min 30 s (b) 9 min 0 s (c) 10 min 0 s (d) 5 min 40 s
  4. 4.⏱️ A 124-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  5. 5.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  6. 6.⏱️ Your video must be 90 seconds long. Your clips add up to 58 seconds. How many more seconds of video do you need?
  7. 7.⏱️ Your video must be 60 seconds long. Your clips add up to 29 seconds. How many more seconds of video do you need?
  8. 8.⏱️ How many seconds are in 1 minute? (a) 60 (b) 10 (c) 100 (d) 30
  9. 9.⏱️ Your video must be 90 seconds long. Your clips add up to 62 seconds. How many more seconds of video do you need?
  10. 10.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) half as long (c) silent (d) twice as long
  11. 11.⏱️ How many seconds is 5 minutes 2 seconds?
  12. 12.⏱️ 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
  13. 13.⏱️ Your video must be 90 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
  14. 14.⏱️ A video has three clips of 7, 36 and 6 seconds. How long is the video (in seconds)?
  15. 15.⏱️ A video has three clips of 52, 17 and 60 seconds. How long is the video (in seconds)?
  16. 16.⏱️ A 63-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  17. 17.⏱️ A video has three clips of 10, 21 and 32 seconds. How long is the video (in seconds)?
  18. 18.⏱️ A 120-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  19. 19.⏱️ A 42-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  20. 20.⏱️ A 58-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  21. 21.⏱️ A video has three clips of 50, 31 and 18 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  23. 23.⏱️ How many seconds is 2 minutes 1 second?
  24. 24.⏱️ A video is 170 seconds long. How long is that in minutes and seconds? (a) 1 min 70 s (b) 2 min 50 s (c) 3 min 50 s (d) 2 min 20 s
  25. 25.⏱️ Your video must be 60 seconds long. Your clips add up to 53 seconds. How many more seconds of video do you need?
  26. 26.⏱️ A video is 225 seconds long. How long is that in minutes and seconds? (a) 2 min 25 s (b) 3 min 15 s (c) 3 min 45 s (d) 4 min 45 s
  27. 27.⏱️ A video has three clips of 55, 47 and 9 seconds. How long is the video (in 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 is 80 seconds long. How long is that in minutes and seconds? (a) 1 min 50 s (b) 1 min 20 s (c) 2 min 20 s (d) 3 min 20 s
  30. 30.⏱️ A video is 180 seconds long. How long is that in minutes and seconds? (a) 3 min 0 s (b) 3 min 30 s (c) 4 min 0 s (d) 1 min 80 s
  31. 31.⏱️ A video has three clips of 25, 55 and 7 seconds. How long is the video (in seconds)?
  32. 32.⏱️ A video has three clips of 37, 34 and 18 seconds. How long is the video (in seconds)?
  33. 33.⏱️ A 14-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  34. 34.⏱️ Your video must be 180 seconds long. Your clips add up to 138 seconds. How many more seconds of video do you need?
  35. 35.⏱️ How many seconds is 5 minutes 28 seconds?
  36. 36.⏱️ A video is 300 seconds long. How long is that in minutes and seconds? (a) 3 min 0 s (b) 6 min 0 s (c) 5 min 0 s (d) 5 min 30 s
  37. 37.⏱️ A video is 240 seconds long. How long is that in minutes and seconds? (a) 5 min 0 s (b) 2 min 40 s (c) 4 min 30 s (d) 4 min 0 s
  38. 38.⏱️ How many seconds is 2 minutes 56 seconds?
  39. 39.⏱️ A 99-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  40. 40.⏱️ A video is 105 seconds long. How long is that in minutes and seconds? (a) 1 min 15 s (b) 1 min 45 s (c) 2 min 45 s (d) 1 min 5 s

Answer key

  1. 74
  2. 42
  3. 9 min 0 s
  4. 31
  5. 20
  6. 32
  7. 31
  8. 60
  9. 28
  10. half as long
  11. 302
  12. the sum of the clips
  13. 83
  14. 49
  15. 129
  16. 21
  17. 63
  18. 40
  19. 14
  20. 29
  21. 99
  22. 8
  23. 121
  24. 2 min 50 s
  25. 7
  26. 3 min 45 s
  27. 111
  28. 28
  29. 1 min 20 s
  30. 3 min 0 s
  31. 87
  32. 89
  33. 7
  34. 42
  35. 328
  36. 5 min 0 s
  37. 4 min 0 s
  38. 176
  39. 33
  40. 1 min 45 s

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