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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 192 · 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 video has three clips of 30, 51 and 49 seconds. How long is the video (in seconds)?
  2. 2.⏱️ How many seconds is 4 minutes 43 seconds?
  3. 3.⏱️ A video has three clips of 43, 32 and 14 seconds. How long is the video (in seconds)?
  4. 4.⏱️ A 96-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  5. 5.⏱️ A 36-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  6. 6.⏱️ How many seconds are in 1 minute? (a) 100 (b) 30 (c) 10 (d) 60
  7. 7.⏱️ A video has three clips of 46, 35 and 44 seconds. How long is the video (in seconds)?
  8. 8.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  9. 9.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) the same length (c) half as long (d) twice as long
  10. 10.⏱️ A 26-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  11. 11.⏱️ Your video must be 60 seconds long. Your clips add up to 50 seconds. How many more seconds of video do you need?
  12. 12.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  13. 13.⏱️ A 30-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  14. 14.⏱️ A video has three clips of 20, 56 and 59 seconds. How long is the video (in seconds)?
  15. 15.⏱️ Your video must be 60 seconds long. Your clips add up to 17 seconds. How many more seconds of video do you need?
  16. 16.⏱️ A video has three clips of 31, 15 and 34 seconds. How long is the video (in seconds)?
  17. 17.⏱️ A video has three clips of 46, 22 and 29 seconds. How long is the video (in seconds)?
  18. 18.⏱️ A 96-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  19. 19.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) the longest clip (c) the shortest clip (d) always 1 minute
  20. 20.⏱️ How many seconds is 4 minutes 54 seconds?
  21. 21.⏱️ How many seconds is 5 minutes 39 seconds?
  22. 22.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  23. 23.⏱️ A video is 65 seconds long. How long is that in minutes and seconds? (a) 1 min 35 s (b) 3 min 5 s (c) 1 min 5 s (d) 2 min 5 s
  24. 24.⏱️ A 52-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  25. 25.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  26. 26.⏱️ A 60-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  27. 27.⏱️ Your video must be 90 seconds long. Your clips add up to 43 seconds. How many more seconds of video do you need?
  28. 28.⏱️ Your video must be 180 seconds long. Your clips add up to 82 seconds. How many more seconds of video do you need?
  29. 29.⏱️ How many seconds is 1 minute 36 seconds?
  30. 30.⏱️ A video is 100 seconds long. How long is that in minutes and seconds? (a) 1 min 0 s (b) 2 min 40 s (c) 1 min 40 s (d) 1 min 10 s
  31. 31.⏱️ Your video must be 90 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?
  32. 32.⏱️ A 68-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  33. 33.⏱️ How many seconds is 9 minutes 14 seconds?
  34. 34.⏱️ Your video must be 60 seconds long. Your clips add up to 38 seconds. How many more seconds of video do you need?
  35. 35.⏱️ A video has three clips of 20, 37 and 23 seconds. How long is the video (in seconds)?
  36. 36.⏱️ How many seconds is 9 minutes 57 seconds?
  37. 37.⏱️ Your video must be 90 seconds long. Your clips add up to 44 seconds. How many more seconds of video do you need?
  38. 38.⏱️ A video has three clips of 10, 20 and 20 seconds. How long is the video (in seconds)?
  39. 39.⏱️ Your video must be 90 seconds long. Your clips add up to 42 seconds. How many more seconds of video do you need?
  40. 40.⏱️ A 50-second clip is sped up to 2× speed. How long does it last now (in seconds)?

Answer key

  1. 130
  2. 283
  3. 89
  4. 32
  5. 9
  6. 60
  7. 125
  8. 60
  9. half as long
  10. 52
  11. 10
  12. 18
  13. 15
  14. 135
  15. 43
  16. 80
  17. 97
  18. 24
  19. the sum of the clips
  20. 294
  21. 339
  22. 8
  23. 1 min 5 s
  24. 26
  25. 14
  26. 15
  27. 47
  28. 98
  29. 96
  30. 1 min 40 s
  31. 74
  32. 17
  33. 554
  34. 22
  35. 80
  36. 597
  37. 46
  38. 50
  39. 48
  40. 25

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