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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 191 · 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 are in 1 minute? (a) 60 (b) 30 (c) 10 (d) 100
  2. 2.⏱️ A video has three clips of 41, 37 and 5 seconds. How long is the video (in seconds)?
  3. 3.⏱️ A video has three clips of 23, 19 and 56 seconds. How long is the video (in seconds)?
  4. 4.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) twice as long (c) silent (d) half as long
  5. 5.⏱️ A 54-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  6. 6.⏱️ Your video must be 90 seconds long. Your clips add up to 62 seconds. How many more seconds of video do you need?
  7. 7.⏱️ A video has three clips of 18, 39 and 34 seconds. How long is the video (in seconds)?
  8. 8.⏱️ A video is 480 seconds long. How long is that in minutes and seconds? (a) 4 min 80 s (b) 9 min 0 s (c) 8 min 0 s (d) 8 min 30 s
  9. 9.⏱️ Your video must be 180 seconds long. Your clips add up to 153 seconds. How many more seconds of video do you need?
  10. 10.⏱️ A video is 560 seconds long. How long is that in minutes and seconds? (a) 9 min 50 s (b) 10 min 20 s (c) 9 min 20 s (d) 5 min 60 s
  11. 11.⏱️ A video is 455 seconds long. How long is that in minutes and seconds? (a) 8 min 35 s (b) 7 min 5 s (c) 4 min 55 s (d) 7 min 35 s
  12. 12.⏱️ Your video must be 120 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?
  13. 13.⏱️ A 136-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  14. 14.⏱️ A video has three clips of 17, 21 and 24 seconds. How long is the video (in seconds)?
  15. 15.⏱️ Your video must be 90 seconds long. Your clips add up to 24 seconds. How many more seconds of video do you need?
  16. 16.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  17. 17.⏱️ Your video must be 120 seconds long. Your clips add up to 106 seconds. How many more seconds of video do you need?
  18. 18.⏱️ Your video must be 120 seconds long. Your clips add up to 24 seconds. How many more seconds of video do you need?
  19. 19.⏱️ A 44-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  20. 20.⏱️ A video has three clips of 43, 22 and 35 seconds. How long is the video (in seconds)?
  21. 21.⏱️ A video has three clips of 42, 7 and 17 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A video has three clips of 48, 9 and 7 seconds. How long is the video (in seconds)?
  23. 23.⏱️ 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
  24. 24.⏱️ Your video must be 120 seconds long. Your clips add up to 69 seconds. How many more seconds of video do you need?
  25. 25.⏱️ A video has three clips of 12, 36 and 50 seconds. How long is the video (in seconds)?
  26. 26.⏱️ How many seconds is 7 minutes 56 seconds?
  27. 27.⏱️ How many seconds is 7 minutes 2 seconds?
  28. 28.⏱️ A video has three clips of 41, 14 and 15 seconds. How long is the video (in seconds)?
  29. 29.⏱️ A video is 330 seconds long. How long is that in minutes and seconds? (a) 3 min 30 s (b) 5 min 30 s (c) 6 min 30 s (d) 5 min 0 s
  30. 30.⏱️ A video has three clips of 16, 53 and 42 seconds. How long is the video (in seconds)?
  31. 31.⏱️ How many seconds is 2 minutes 53 seconds?
  32. 32.⏱️ Your video must be 60 seconds long. Your clips add up to 43 seconds. How many more seconds of video do you need?
  33. 33.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  34. 34.⏱️ A video has three clips of 8, 9 and 15 seconds. How long is the video (in seconds)?
  35. 35.⏱️ A video has three clips of 43, 6 and 38 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A video is 115 seconds long. How long is that in minutes and seconds? (a) 2 min 55 s (b) 1 min 25 s (c) 1 min 15 s (d) 1 min 55 s
  37. 37.⏱️ A video is 185 seconds long. How long is that in minutes and seconds? (a) 1 min 85 s (b) 4 min 5 s (c) 3 min 5 s (d) 3 min 35 s
  38. 38.⏱️ Your video must be 180 seconds long. Your clips add up to 146 seconds. How many more seconds of video do you need?
  39. 39.⏱️ Your video must be 60 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
  40. 40.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?

Answer key

  1. 60
  2. 83
  3. 98
  4. half as long
  5. 18
  6. 28
  7. 91
  8. 8 min 0 s
  9. 27
  10. 9 min 20 s
  11. 7 min 35 s
  12. 104
  13. 34
  14. 62
  15. 66
  16. 10
  17. 14
  18. 96
  19. 11
  20. 100
  21. 66
  22. 64
  23. the sum of the clips
  24. 51
  25. 98
  26. 476
  27. 422
  28. 70
  29. 5 min 30 s
  30. 111
  31. 173
  32. 17
  33. 26
  34. 32
  35. 87
  36. 1 min 55 s
  37. 3 min 5 s
  38. 34
  39. 53
  40. 32

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