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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 161 · 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 36-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  2. 2.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  3. 3.⏱️ An 87-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  4. 4.⏱️ How many seconds is 1 minute 11 seconds?
  5. 5.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  6. 6.⏱️ How many seconds is 1 minute 17 seconds?
  7. 7.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) twice as long (c) the same length (d) silent
  8. 8.⏱️ How many seconds is 8 minutes 39 seconds?
  9. 9.⏱️ How many seconds is 6 minutes 16 seconds?
  10. 10.⏱️ 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
  11. 11.⏱️ A 52-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  12. 12.⏱️ How many seconds are in 1 minute? (a) 10 (b) 30 (c) 60 (d) 100
  13. 13.⏱️ A video has three clips of 15, 47 and 23 seconds. How long is the video (in seconds)?
  14. 14.⏱️ A video has three clips of 10, 7 and 14 seconds. How long is the video (in seconds)?
  15. 15.⏱️ A 32-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  16. 16.⏱️ Your video must be 180 seconds long. Your clips add up to 32 seconds. How many more seconds of video do you need?
  17. 17.⏱️ Your video must be 60 seconds long. Your clips add up to 8 seconds. How many more seconds of video do you need?
  18. 18.⏱️ Your video must be 120 seconds long. Your clips add up to 12 seconds. How many more seconds of video do you need?
  19. 19.⏱️ A 56-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  20. 20.⏱️ How many seconds is 6 minutes 48 seconds?
  21. 21.⏱️ A video is 295 seconds long. How long is that in minutes and seconds? (a) 4 min 55 s (b) 2 min 95 s (c) 5 min 55 s (d) 4 min 25 s
  22. 22.⏱️ A video is 485 seconds long. How long is that in minutes and seconds? (a) 8 min 5 s (b) 8 min 35 s (c) 4 min 85 s (d) 9 min 5 s
  23. 23.⏱️ A video is 60 seconds long. How long is that in minutes and seconds? (a) 2 min 0 s (b) 1 min 30 s (c) 3 min 0 s (d) 1 min 0 s
  24. 24.⏱️ How many seconds is 6 minutes 45 seconds?
  25. 25.⏱️ Your video must be 120 seconds long. Your clips add up to 45 seconds. How many more seconds of video do you need?
  26. 26.⏱️ A video has three clips of 27, 27 and 44 seconds. How long is the video (in seconds)?
  27. 27.⏱️ Your video must be 120 seconds long. Your clips add up to 95 seconds. How many more seconds of video do you need?
  28. 28.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  29. 29.⏱️ A video is 365 seconds long. How long is that in minutes and seconds? (a) 3 min 65 s (b) 6 min 5 s (c) 7 min 5 s (d) 6 min 35 s
  30. 30.⏱️ A video has three clips of 60, 9 and 42 seconds. How long is the video (in seconds)?
  31. 31.⏱️ How many seconds is 7 minutes 48 seconds?
  32. 32.⏱️ A 102-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  33. 33.⏱️ How many seconds is 6 minutes 46 seconds?
  34. 34.⏱️ A video is 330 seconds long. How long is that in minutes and seconds? (a) 5 min 0 s (b) 6 min 30 s (c) 3 min 30 s (d) 5 min 30 s
  35. 35.⏱️ A video is 445 seconds long. How long is that in minutes and seconds? (a) 4 min 45 s (b) 8 min 25 s (c) 7 min 25 s (d) 7 min 55 s
  36. 36.⏱️ How many seconds is 2 minutes 39 seconds?
  37. 37.⏱️ A video is 440 seconds long. How long is that in minutes and seconds? (a) 4 min 40 s (b) 7 min 50 s (c) 8 min 20 s (d) 7 min 20 s
  38. 38.⏱️ A video has three clips of 16, 5 and 58 seconds. How long is the video (in seconds)?
  39. 39.⏱️ A 15-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  40. 40.⏱️ A 30-second clip is sped up to 3× speed. How long does it last now (in seconds)?

Answer key

  1. 18
  2. 20
  3. 29
  4. 71
  5. 32
  6. 77
  7. half as long
  8. 519
  9. 376
  10. the sum of the clips
  11. 26
  12. 60
  13. 85
  14. 31
  15. 8
  16. 148
  17. 52
  18. 108
  19. 28
  20. 408
  21. 4 min 55 s
  22. 8 min 5 s
  23. 1 min 0 s
  24. 405
  25. 75
  26. 98
  27. 25
  28. 58
  29. 6 min 5 s
  30. 111
  31. 468
  32. 34
  33. 406
  34. 5 min 30 s
  35. 7 min 25 s
  36. 159
  37. 7 min 20 s
  38. 79
  39. 5
  40. 10

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