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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 75 · 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 60 seconds long. Your clips add up to 49 seconds. How many more seconds of video do you need?
  2. 2.⏱️ Your video must be 180 seconds long. Your clips add up to 63 seconds. How many more seconds of video do you need?
  3. 3.⏱️ Your video must be 90 seconds long. Your clips add up to 46 seconds. How many more seconds of video do you need?
  4. 4.⏱️ A 12-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  5. 5.⏱️ How many seconds are in 1 minute? (a) 100 (b) 60 (c) 30 (d) 10
  6. 6.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) twice as long (c) silent (d) the same length
  7. 7.⏱️ A video has three clips of 48, 22 and 44 seconds. How long is the video (in seconds)?
  8. 8.⏱️ A 60-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  9. 9.⏱️ A 72-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  10. 10.⏱️ A video has three clips of 20, 13 and 48 seconds. How long is the video (in seconds)?
  11. 11.⏱️ Your video must be 60 seconds long. Your clips add up to 36 seconds. How many more seconds of video do you need?
  12. 12.⏱️ A video has three clips of 17, 52 and 14 seconds. How long is the video (in seconds)?
  13. 13.⏱️ A video is 145 seconds long. How long is that in minutes and seconds? (a) 3 min 25 s (b) 2 min 25 s (c) 2 min 55 s (d) 1 min 45 s
  14. 14.⏱️ Your video must be 180 seconds long. Your clips add up to 35 seconds. How many more seconds of video do you need?
  15. 15.⏱️ Your video must be 60 seconds long. Your clips add up to 45 seconds. How many more seconds of video do you need?
  16. 16.⏱️ Your video must be 180 seconds long. Your clips add up to 87 seconds. How many more seconds of video do you need?
  17. 17.⏱️ A video is 195 seconds long. How long is that in minutes and seconds? (a) 3 min 45 s (b) 1 min 95 s (c) 3 min 15 s (d) 4 min 15 s
  18. 18.⏱️ Your video must be 60 seconds long. Your clips add up to 40 seconds. How many more seconds of video do you need?
  19. 19.⏱️ A video is 235 seconds long. How long is that in minutes and seconds? (a) 2 min 35 s (b) 3 min 25 s (c) 4 min 55 s (d) 3 min 55 s
  20. 20.⏱️ A 26-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  21. 21.⏱️ A 36-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  22. 22.⏱️ Your video must be 60 seconds long. Your clips add up to 14 seconds. How many more seconds of video do you need?
  23. 23.⏱️ A video has three clips of 13, 59 and 44 seconds. How long is the video (in seconds)?
  24. 24.⏱️ A video has three clips of 11, 5 and 22 seconds. How long is the video (in seconds)?
  25. 25.⏱️ A video is 180 seconds long. How long is that in minutes and seconds? (a) 3 min 0 s (b) 3 min 30 s (c) 1 min 80 s (d) 4 min 0 s
  26. 26.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  27. 27.⏱️ A video has three clips of 18, 56 and 54 seconds. How long is the video (in seconds)?
  28. 28.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) always 1 minute (c) the sum of the clips (d) the shortest clip
  29. 29.⏱️ How many seconds is 9 minutes 11 seconds?
  30. 30.⏱️ A 26-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  31. 31.⏱️ A video has three clips of 7, 21 and 41 seconds. How long is the video (in seconds)?
  32. 32.⏱️ How many seconds is 2 minutes 44 seconds?
  33. 33.⏱️ A video is 550 seconds long. How long is that in minutes and seconds? (a) 10 min 10 s (b) 9 min 10 s (c) 5 min 50 s (d) 9 min 40 s
  34. 34.⏱️ A video is 335 seconds long. How long is that in minutes and seconds? (a) 6 min 35 s (b) 5 min 5 s (c) 3 min 35 s (d) 5 min 35 s
  35. 35.⏱️ A video is 580 seconds long. How long is that in minutes and seconds? (a) 5 min 80 s (b) 9 min 10 s (c) 10 min 40 s (d) 9 min 40 s
  36. 36.⏱️ How many seconds is 7 minutes 29 seconds?
  37. 37.⏱️ A video has three clips of 31, 36 and 8 seconds. How long is the video (in seconds)?
  38. 38.⏱️ A 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  39. 39.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  40. 40.⏱️ A video has three clips of 49, 52 and 23 seconds. How long is the video (in seconds)?

Answer key

  1. 11
  2. 117
  3. 44
  4. 6
  5. 60
  6. half as long
  7. 114
  8. 20
  9. 24
  10. 81
  11. 24
  12. 83
  13. 2 min 25 s
  14. 145
  15. 15
  16. 93
  17. 3 min 15 s
  18. 20
  19. 3 min 55 s
  20. 52
  21. 18
  22. 46
  23. 116
  24. 38
  25. 3 min 0 s
  26. 18
  27. 128
  28. the sum of the clips
  29. 551
  30. 13
  31. 69
  32. 164
  33. 9 min 10 s
  34. 5 min 35 s
  35. 9 min 40 s
  36. 449
  37. 75
  38. 30
  39. 20
  40. 124

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