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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 120 · 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 120 seconds long. Your clips add up to 12 seconds. How many more seconds of video do you need?
  2. 2.⏱️ A video has three clips of 17, 30 and 44 seconds. How long is the video (in seconds)?
  3. 3.⏱️ A 48-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  4. 4.⏱️ How many seconds is 9 minutes 23 seconds?
  5. 5.⏱️ Your video must be 60 seconds long. Your clips add up to 35 seconds. How many more seconds of video do you need?
  6. 6.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) the shortest clip (c) always 1 minute (d) the sum of the clips
  7. 7.⏱️ How many seconds are in 1 minute? (a) 30 (b) 100 (c) 10 (d) 60
  8. 8.⏱️ A video is 490 seconds long. How long is that in minutes and seconds? (a) 9 min 10 s (b) 8 min 10 s (c) 4 min 90 s (d) 8 min 40 s
  9. 9.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  10. 10.⏱️ A video is 160 seconds long. How long is that in minutes and seconds? (a) 3 min 40 s (b) 2 min 10 s (c) 2 min 40 s (d) 1 min 60 s
  11. 11.⏱️ How many seconds is 6 minutes 14 seconds?
  12. 12.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  13. 13.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) silent (c) twice as long (d) half as long
  14. 14.⏱️ A video has three clips of 41, 49 and 26 seconds. How long is the video (in seconds)?
  15. 15.⏱️ How many seconds is 4 minutes 18 seconds?
  16. 16.⏱️ A 16-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  17. 17.⏱️ A video has three clips of 46, 43 and 9 seconds. How long is the video (in seconds)?
  18. 18.⏱️ A 26-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  19. 19.⏱️ Your video must be 90 seconds long. Your clips add up to 70 seconds. How many more seconds of video do you need?
  20. 20.⏱️ How many seconds is 8 minutes 34 seconds?
  21. 21.⏱️ A video is 410 seconds long. How long is that in minutes and seconds? (a) 4 min 10 s (b) 6 min 50 s (c) 6 min 20 s (d) 7 min 50 s
  22. 22.⏱️ Your video must be 60 seconds long. Your clips add up to 45 seconds. How many more seconds of video do you need?
  23. 23.⏱️ A video has three clips of 26, 8 and 14 seconds. How long is the video (in seconds)?
  24. 24.⏱️ A 44-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  25. 25.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  26. 26.⏱️ Your video must be 90 seconds long. Your clips add up to 26 seconds. How many more seconds of video do you need?
  27. 27.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  28. 28.⏱️ How many seconds is 7 minutes 21 seconds?
  29. 29.⏱️ A 24-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  30. 30.⏱️ Your video must be 90 seconds long. Your clips add up to 76 seconds. How many more seconds of video do you need?
  31. 31.⏱️ A 40-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  32. 32.⏱️ A video has three clips of 48, 23 and 18 seconds. How long is the video (in seconds)?
  33. 33.⏱️ A video has three clips of 18, 50 and 18 seconds. How long is the video (in seconds)?
  34. 34.⏱️ How many seconds is 4 minutes 31 seconds?
  35. 35.⏱️ A video has three clips of 15, 17 and 31 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A video has three clips of 12, 32 and 7 seconds. How long is the video (in seconds)?
  37. 37.⏱️ A video is 75 seconds long. How long is that in minutes and seconds? (a) 1 min 45 s (b) 1 min 15 s (c) 3 min 15 s (d) 2 min 15 s
  38. 38.⏱️ How many seconds is 4 minutes 29 seconds?
  39. 39.⏱️ A video is 155 seconds long. How long is that in minutes and seconds? (a) 3 min 35 s (b) 2 min 5 s (c) 1 min 55 s (d) 2 min 35 s
  40. 40.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?

Answer key

  1. 108
  2. 91
  3. 24
  4. 563
  5. 25
  6. the sum of the clips
  7. 60
  8. 8 min 10 s
  9. 50
  10. 2 min 40 s
  11. 374
  12. 14
  13. half as long
  14. 116
  15. 258
  16. 8
  17. 98
  18. 52
  19. 20
  20. 514
  21. 6 min 50 s
  22. 15
  23. 48
  24. 11
  25. 24
  26. 64
  27. 18
  28. 441
  29. 12
  30. 14
  31. 10
  32. 89
  33. 86
  34. 271
  35. 63
  36. 51
  37. 1 min 15 s
  38. 269
  39. 2 min 35 s
  40. 26

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