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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 33 · 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 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  2. 2.⏱️ A video has three clips of 13, 11 and 51 seconds. How long is the video (in seconds)?
  3. 3.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) the same length (c) twice as long (d) silent
  4. 4.⏱️ A video is 595 seconds long. How long is that in minutes and seconds? (a) 10 min 55 s (b) 9 min 55 s (c) 5 min 95 s (d) 9 min 25 s
  5. 5.⏱️ How many seconds is 4 minutes 22 seconds?
  6. 6.⏱️ A video has three clips of 13, 12 and 36 seconds. How long is the video (in seconds)?
  7. 7.⏱️ Your video must be 120 seconds long. Your clips add up to 101 seconds. How many more seconds of video do you need?
  8. 8.⏱️ How many seconds is 9 minutes 6 seconds?
  9. 9.⏱️ A 136-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  10. 10.⏱️ How many seconds is 2 minutes 53 seconds?
  11. 11.⏱️ How many seconds are in 1 minute? (a) 10 (b) 30 (c) 100 (d) 60
  12. 12.⏱️ An 81-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  13. 13.⏱️ A 62-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  14. 14.⏱️ Your video must be 60 seconds long. Your clips add up to 54 seconds. How many more seconds of video do you need?
  15. 15.⏱️ Your video must be 90 seconds long. Your clips add up to 17 seconds. How many more seconds of video do you need?
  16. 16.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) the shortest clip (c) the sum of the clips (d) always 1 minute
  17. 17.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  18. 18.⏱️ A 116-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  19. 19.⏱️ A video has three clips of 56, 50 and 5 seconds. How long is the video (in seconds)?
  20. 20.⏱️ A video is 475 seconds long. How long is that in minutes and seconds? (a) 4 min 75 s (b) 8 min 55 s (c) 7 min 55 s (d) 7 min 25 s
  21. 21.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  22. 22.⏱️ Your video must be 180 seconds long. Your clips add up to 62 seconds. How many more seconds of video do you need?
  23. 23.⏱️ A 66-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  24. 24.⏱️ A 64-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  25. 25.⏱️ A video is 425 seconds long. How long is that in minutes and seconds? (a) 7 min 35 s (b) 7 min 5 s (c) 8 min 5 s (d) 4 min 25 s
  26. 26.⏱️ How many seconds is 4 minutes 46 seconds?
  27. 27.⏱️ A video has three clips of 59, 17 and 54 seconds. How long is the video (in seconds)?
  28. 28.⏱️ How many seconds is 2 minutes 12 seconds?
  29. 29.⏱️ How many seconds is 2 minutes 18 seconds?
  30. 30.⏱️ Your video must be 60 seconds long. Your clips add up to 14 seconds. How many more seconds of video do you need?
  31. 31.⏱️ A video has three clips of 11, 54 and 9 seconds. How long is the video (in seconds)?
  32. 32.⏱️ Your video must be 180 seconds long. Your clips add up to 25 seconds. How many more seconds of video do you need?
  33. 33.⏱️ How many seconds is 7 minutes 29 seconds?
  34. 34.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  35. 35.⏱️ A video has three clips of 48, 50 and 7 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A video is 420 seconds long. How long is that in minutes and seconds? (a) 7 min 0 s (b) 4 min 20 s (c) 8 min 0 s (d) 7 min 30 s
  37. 37.⏱️ Your video must be 60 seconds long. Your clips add up to 44 seconds. How many more seconds of video do you need?
  38. 38.⏱️ How many seconds is 3 minutes 33 seconds?
  39. 39.⏱️ How many seconds is 6 minutes 23 seconds?
  40. 40.⏱️ A video has three clips of 34, 37 and 19 seconds. How long is the video (in seconds)?

Answer key

  1. 28
  2. 75
  3. half as long
  4. 9 min 55 s
  5. 262
  6. 61
  7. 19
  8. 546
  9. 34
  10. 173
  11. 60
  12. 27
  13. 31
  14. 6
  15. 73
  16. the sum of the clips
  17. 36
  18. 29
  19. 111
  20. 7 min 55 s
  21. 42
  22. 118
  23. 22
  24. 16
  25. 7 min 5 s
  26. 286
  27. 130
  28. 132
  29. 138
  30. 46
  31. 74
  32. 155
  33. 449
  34. 56
  35. 105
  36. 7 min 0 s
  37. 16
  38. 213
  39. 383
  40. 90

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