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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 277 · 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.⏱️ Your video must be 90 seconds long. Your clips add up to 35 seconds. How many more seconds of video do you need?
  2. 2.⏱️ How many seconds is 6 minutes 15 seconds?
  3. 3.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) twice as long (c) half as long (d) silent
  4. 4.⏱️ A video has three clips of 56, 27 and 5 seconds. How long is the video (in seconds)?
  5. 5.⏱️ Your video must be 120 seconds long. Your clips add up to 45 seconds. How many more seconds of video do you need?
  6. 6.⏱️ Your video must be 60 seconds long. Your clips add up to 26 seconds. How many more seconds of video do you need?
  7. 7.⏱️ How many seconds is 2 minutes 12 seconds?
  8. 8.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  9. 9.⏱️ How many seconds is 3 minutes 32 seconds?
  10. 10.⏱️ A video is 70 seconds long. How long is that in minutes and seconds? (a) 2 min 10 s (b) 1 min 40 s (c) 3 min 10 s (d) 1 min 10 s
  11. 11.⏱️ A 136-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  12. 12.⏱️ When you put clips one after another, the video length is … (a) always 1 minute (b) the sum of the clips (c) the longest clip (d) the shortest clip
  13. 13.⏱️ A video is 75 seconds long. How long is that in minutes and seconds? (a) 1 min 15 s (b) 2 min 15 s (c) 3 min 15 s (d) 1 min 45 s
  14. 14.⏱️ A video has three clips of 21, 36 and 16 seconds. How long is the video (in seconds)?
  15. 15.⏱️ An 8-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  16. 16.⏱️ How many seconds is 8 minutes 7 seconds?
  17. 17.⏱️ A video is 545 seconds long. How long is that in minutes and seconds? (a) 9 min 5 s (b) 5 min 45 s (c) 10 min 5 s (d) 9 min 35 s
  18. 18.⏱️ A 16-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  19. 19.⏱️ A 27-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  20. 20.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  21. 21.⏱️ A video has three clips of 8, 8 and 5 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A video has three clips of 5, 35 and 17 seconds. How long is the video (in seconds)?
  23. 23.⏱️ Your video must be 60 seconds long. Your clips add up to 19 seconds. How many more seconds of video do you need?
  24. 24.⏱️ A video has three clips of 7, 48 and 18 seconds. How long is the video (in seconds)?
  25. 25.⏱️ A video is 500 seconds long. How long is that in minutes and seconds? (a) 5 min 0 s (b) 9 min 20 s (c) 8 min 20 s (d) 8 min 50 s
  26. 26.⏱️ How many seconds are in 1 minute? (a) 100 (b) 60 (c) 30 (d) 10
  27. 27.⏱️ A video has three clips of 29, 50 and 18 seconds. How long is the video (in seconds)?
  28. 28.⏱️ How many seconds is 2 minutes 10 seconds?
  29. 29.⏱️ A 102-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  30. 30.⏱️ A 48-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  31. 31.⏱️ How many seconds is 2 minutes 34 seconds?
  32. 32.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  33. 33.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  34. 34.⏱️ A video is 445 seconds long. How long is that in minutes and seconds? (a) 7 min 55 s (b) 4 min 45 s (c) 7 min 25 s (d) 8 min 25 s
  35. 35.⏱️ Your video must be 60 seconds long. Your clips add up to 55 seconds. How many more seconds of video do you need?
  36. 36.⏱️ Your video must be 120 seconds long. Your clips add up to 114 seconds. How many more seconds of video do you need?
  37. 37.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  38. 38.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  39. 39.⏱️ Your video must be 180 seconds long. Your clips add up to 82 seconds. How many more seconds of video do you need?
  40. 40.⏱️ A video has three clips of 50, 49 and 21 seconds. How long is the video (in seconds)?

Answer key

  1. 55
  2. 375
  3. half as long
  4. 88
  5. 75
  6. 34
  7. 132
  8. 36
  9. 212
  10. 1 min 10 s
  11. 34
  12. the sum of the clips
  13. 1 min 15 s
  14. 73
  15. 16
  16. 487
  17. 9 min 5 s
  18. 8
  19. 9
  20. 26
  21. 21
  22. 57
  23. 41
  24. 73
  25. 8 min 20 s
  26. 60
  27. 97
  28. 130
  29. 34
  30. 16
  31. 154
  32. 28
  33. 42
  34. 7 min 25 s
  35. 5
  36. 6
  37. 50
  38. 32
  39. 98
  40. 120

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