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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 166 · 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 19-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  2. 2.⏱️ How many seconds is 6 minutes 57 seconds?
  3. 3.⏱️ Your video must be 90 seconds long. Your clips add up to 11 seconds. How many more seconds of video do you need?
  4. 4.⏱️ A 48-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  5. 5.⏱️ A 42-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  6. 6.⏱️ A 45-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  7. 7.⏱️ How many seconds is 7 minutes 53 seconds?
  8. 8.⏱️ 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
  9. 9.⏱️ A video is 305 seconds long. How long is that in minutes and seconds? (a) 6 min 5 s (b) 5 min 35 s (c) 5 min 5 s (d) 3 min 5 s
  10. 10.⏱️ A 60-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  11. 11.⏱️ A video is 425 seconds long. How long is that in minutes and seconds? (a) 7 min 5 s (b) 8 min 5 s (c) 4 min 25 s (d) 7 min 35 s
  12. 12.⏱️ Your video must be 180 seconds long. Your clips add up to 18 seconds. How many more seconds of video do you need?
  13. 13.⏱️ How many seconds is 1 minute 50 seconds?
  14. 14.⏱️ Speeding a clip up to 2× makes it … (a) twice as long (b) half as long (c) silent (d) the same length
  15. 15.⏱️ A 15-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  16. 16.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  17. 17.⏱️ An 84-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  18. 18.⏱️ Your video must be 180 seconds long. Your clips add up to 22 seconds. How many more seconds of video do you need?
  19. 19.⏱️ A 66-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  20. 20.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  21. 21.⏱️ How many seconds are in 1 minute? (a) 100 (b) 60 (c) 30 (d) 10
  22. 22.⏱️ How many seconds is 8 minutes 10 seconds?
  23. 23.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  24. 24.⏱️ A 56-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  25. 25.⏱️ How many seconds is 7 minutes 2 seconds?
  26. 26.⏱️ How many seconds is 3 minutes 54 seconds?
  27. 27.⏱️ A video is 375 seconds long. How long is that in minutes and seconds? (a) 3 min 75 s (b) 6 min 15 s (c) 6 min 45 s (d) 7 min 15 s
  28. 28.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  29. 29.⏱️ How many seconds is 5 minutes 32 seconds?
  30. 30.⏱️ How many seconds is 2 minutes 10 seconds?
  31. 31.⏱️ Your video must be 120 seconds long. Your clips add up to 55 seconds. How many more seconds of video do you need?
  32. 32.⏱️ How many seconds is 2 minutes 30 seconds?
  33. 33.⏱️ A video is 470 seconds long. How long is that in minutes and seconds? (a) 7 min 50 s (b) 7 min 20 s (c) 4 min 70 s (d) 8 min 50 s
  34. 34.⏱️ How many seconds is 8 minutes 43 seconds?
  35. 35.⏱️ How many seconds is 4 minutes 28 seconds?
  36. 36.⏱️ A video has three clips of 8, 48 and 48 seconds. How long is the video (in seconds)?
  37. 37.⏱️ A video has three clips of 21, 24 and 45 seconds. How long is the video (in seconds)?
  38. 38.⏱️ Your video must be 180 seconds long. Your clips add up to 88 seconds. How many more seconds of video do you need?
  39. 39.⏱️ A 70-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  40. 40.⏱️ A video has three clips of 28, 32 and 33 seconds. How long is the video (in seconds)?

Answer key

  1. 38
  2. 417
  3. 79
  4. 24
  5. 14
  6. 15
  7. 473
  8. the sum of the clips
  9. 5 min 5 s
  10. 20
  11. 7 min 5 s
  12. 162
  13. 110
  14. half as long
  15. 5
  16. 34
  17. 21
  18. 158
  19. 33
  20. 20
  21. 60
  22. 490
  23. 48
  24. 14
  25. 422
  26. 234
  27. 6 min 15 s
  28. 56
  29. 332
  30. 130
  31. 65
  32. 150
  33. 7 min 50 s
  34. 523
  35. 268
  36. 104
  37. 90
  38. 92
  39. 35
  40. 93

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