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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 337 · 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 29, 51 and 10 seconds. How long is the video (in seconds)?
  2. 2.⏱️ A video has three clips of 7, 33 and 22 seconds. How long is the video (in seconds)?
  3. 3.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) twice as long (c) the same length (d) half as long
  4. 4.⏱️ How many seconds are in 1 minute? (a) 30 (b) 10 (c) 60 (d) 100
  5. 5.⏱️ Your video must be 180 seconds long. Your clips add up to 34 seconds. How many more seconds of video do you need?
  6. 6.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  7. 7.⏱️ How many seconds is 2 minutes 30 seconds?
  8. 8.⏱️ A 44-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  9. 9.⏱️ A video is 125 seconds long. How long is that in minutes and seconds? (a) 1 min 25 s (b) 2 min 5 s (c) 2 min 35 s (d) 3 min 5 s
  10. 10.⏱️ A video has three clips of 9, 5 and 8 seconds. How long is the video (in seconds)?
  11. 11.⏱️ How many seconds is 6 minutes 59 seconds?
  12. 12.⏱️ A video has three clips of 35, 18 and 34 seconds. How long is the video (in seconds)?
  13. 13.⏱️ How many seconds is 3 minutes 8 seconds?
  14. 14.⏱️ A video is 70 seconds long. How long is that in minutes and seconds? (a) 3 min 10 s (b) 2 min 10 s (c) 1 min 10 s (d) 1 min 40 s
  15. 15.⏱️ A video is 305 seconds long. How long is that in minutes and seconds? (a) 5 min 5 s (b) 3 min 5 s (c) 6 min 5 s (d) 5 min 35 s
  16. 16.⏱️ How many seconds is 2 minutes 48 seconds?
  17. 17.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  18. 18.⏱️ A video is 100 seconds long. How long is that in minutes and seconds? (a) 1 min 40 s (b) 2 min 40 s (c) 1 min 10 s (d) 1 min 0 s
  19. 19.⏱️ A 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  20. 20.⏱️ A video has three clips of 55, 5 and 37 seconds. How long is the video (in seconds)?
  21. 21.⏱️ A video is 500 seconds long. How long is that in minutes and seconds? (a) 8 min 50 s (b) 5 min 0 s (c) 9 min 20 s (d) 8 min 20 s
  22. 22.⏱️ Your video must be 60 seconds long. Your clips add up to 49 seconds. How many more seconds of video do you need?
  23. 23.⏱️ A video has three clips of 36, 31 and 55 seconds. How long is the video (in seconds)?
  24. 24.⏱️ A 100-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  25. 25.⏱️ How many seconds is 2 minutes 49 seconds?
  26. 26.⏱️ A video has three clips of 5, 13 and 46 seconds. How long is the video (in seconds)?
  27. 27.⏱️ Your video must be 180 seconds long. Your clips add up to 84 seconds. How many more seconds of video do you need?
  28. 28.⏱️ An 87-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  29. 29.⏱️ A 152-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  30. 30.⏱️ A video has three clips of 21, 13 and 30 seconds. How long is the video (in seconds)?
  31. 31.⏱️ Your video must be 60 seconds long. Your clips add up to 19 seconds. How many more seconds of video do you need?
  32. 32.⏱️ A video is 385 seconds long. How long is that in minutes and seconds? (a) 3 min 85 s (b) 7 min 25 s (c) 6 min 55 s (d) 6 min 25 s
  33. 33.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  34. 34.⏱️ A 48-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  35. 35.⏱️ A video has three clips of 11, 22 and 19 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A 66-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  37. 37.⏱️ Your video must be 120 seconds long. Your clips add up to 26 seconds. How many more seconds of video do you need?
  38. 38.⏱️ A video is 220 seconds long. How long is that in minutes and seconds? (a) 3 min 40 s (b) 4 min 40 s (c) 3 min 10 s (d) 2 min 20 s
  39. 39.⏱️ A video has three clips of 15, 22 and 14 seconds. How long is the video (in seconds)?
  40. 40.⏱️ A 54-second clip is sped up to 3× speed. How long does it last now (in seconds)?

Answer key

  1. 90
  2. 62
  3. half as long
  4. 60
  5. 146
  6. 28
  7. 150
  8. 11
  9. 2 min 5 s
  10. 22
  11. 419
  12. 87
  13. 188
  14. 1 min 10 s
  15. 5 min 5 s
  16. 168
  17. 8
  18. 1 min 40 s
  19. 30
  20. 97
  21. 8 min 20 s
  22. 11
  23. 122
  24. 25
  25. 169
  26. 64
  27. 96
  28. 29
  29. 38
  30. 64
  31. 41
  32. 6 min 25 s
  33. 24
  34. 16
  35. 52
  36. 33
  37. 94
  38. 3 min 40 s
  39. 51
  40. 18

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