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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 127 · 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.⏱️ How many seconds is 8 minutes 13 seconds?
  2. 2.⏱️ How many seconds is 1 minute 20 seconds?
  3. 3.⏱️ A video has three clips of 20, 19 and 34 seconds. How long is the video (in seconds)?
  4. 4.⏱️ How many seconds is 2 minutes 35 seconds?
  5. 5.⏱️ How many seconds is 1 minute 10 seconds?
  6. 6.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) twice as long (c) half as long (d) the same length
  7. 7.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  8. 8.⏱️ How many seconds are in 1 minute? (a) 100 (b) 30 (c) 60 (d) 10
  9. 9.⏱️ A video is 500 seconds long. How long is that in minutes and seconds? (a) 5 min 0 s (b) 8 min 50 s (c) 9 min 20 s (d) 8 min 20 s
  10. 10.⏱️ Your video must be 90 seconds long. Your clips add up to 41 seconds. How many more seconds of video do you need?
  11. 11.⏱️ A video has three clips of 48, 10 and 44 seconds. How long is the video (in seconds)?
  12. 12.⏱️ Your video must be 180 seconds long. Your clips add up to 55 seconds. How many more seconds of video do you need?
  13. 13.⏱️ A video has three clips of 11, 55 and 44 seconds. How long is the video (in seconds)?
  14. 14.⏱️ How many seconds is 4 minutes 15 seconds?
  15. 15.⏱️ A video is 325 seconds long. How long is that in minutes and seconds? (a) 5 min 25 s (b) 5 min 55 s (c) 6 min 25 s (d) 3 min 25 s
  16. 16.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the sum of the clips (c) always 1 minute (d) the longest clip
  17. 17.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  18. 18.⏱️ A video is 580 seconds long. How long is that in minutes and seconds? (a) 9 min 40 s (b) 9 min 10 s (c) 5 min 80 s (d) 10 min 40 s
  19. 19.⏱️ A video has three clips of 39, 5 and 30 seconds. How long is the video (in seconds)?
  20. 20.⏱️ An 80-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  21. 21.⏱️ A 23-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  22. 22.⏱️ A video has three clips of 9, 25 and 7 seconds. How long is the video (in seconds)?
  23. 23.⏱️ A video has three clips of 14, 14 and 34 seconds. How long is the video (in seconds)?
  24. 24.⏱️ An 11-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  25. 25.⏱️ Your video must be 90 seconds long. Your clips add up to 65 seconds. How many more seconds of video do you need?
  26. 26.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  27. 27.⏱️ A video has three clips of 39, 30 and 44 seconds. How long is the video (in seconds)?
  28. 28.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  29. 29.⏱️ An 87-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  30. 30.⏱️ Your video must be 180 seconds long. Your clips add up to 80 seconds. How many more seconds of video do you need?
  31. 31.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  32. 32.⏱️ A 32-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  33. 33.⏱️ How many seconds is 9 minutes 46 seconds?
  34. 34.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  35. 35.⏱️ A video is 525 seconds long. How long is that in minutes and seconds? (a) 5 min 25 s (b) 8 min 15 s (c) 9 min 45 s (d) 8 min 45 s
  36. 36.⏱️ A video is 175 seconds long. How long is that in minutes and seconds? (a) 1 min 75 s (b) 2 min 55 s (c) 2 min 25 s (d) 3 min 55 s
  37. 37.⏱️ A 66-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  38. 38.⏱️ Your video must be 90 seconds long. Your clips add up to 21 seconds. How many more seconds of video do you need?
  39. 39.⏱️ A 148-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  40. 40.⏱️ A 120-second clip is sped up to 3× speed. How long does it last now (in seconds)?

Answer key

  1. 493
  2. 80
  3. 73
  4. 155
  5. 70
  6. half as long
  7. 34
  8. 60
  9. 8 min 20 s
  10. 49
  11. 102
  12. 125
  13. 110
  14. 255
  15. 5 min 25 s
  16. the sum of the clips
  17. 14
  18. 9 min 40 s
  19. 74
  20. 40
  21. 46
  22. 41
  23. 62
  24. 22
  25. 25
  26. 40
  27. 113
  28. 42
  29. 29
  30. 100
  31. 32
  32. 16
  33. 586
  34. 24
  35. 8 min 45 s
  36. 2 min 55 s
  37. 33
  38. 69
  39. 37
  40. 40

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