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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 19 · 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 23-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 12, 11 and 10 seconds. How long is the video (in seconds)?
  3. 3.⏱️ A video is 390 seconds long. How long is that in minutes and seconds? (a) 3 min 90 s (b) 6 min 30 s (c) 7 min 30 s (d) 6 min 0 s
  4. 4.⏱️ A video is 350 seconds long. How long is that in minutes and seconds? (a) 5 min 50 s (b) 5 min 20 s (c) 6 min 50 s (d) 3 min 50 s
  5. 5.⏱️ How many seconds are in 1 minute? (a) 100 (b) 60 (c) 30 (d) 10
  6. 6.⏱️ A video has three clips of 12, 12 and 12 seconds. How long is the video (in seconds)?
  7. 7.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) silent (c) twice as long (d) half as long
  8. 8.⏱️ A 74-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  9. 9.⏱️ A video has three clips of 31, 29 and 19 seconds. How long is the video (in seconds)?
  10. 10.⏱️ Your video must be 90 seconds long. Your clips add up to 17 seconds. How many more seconds of video do you need?
  11. 11.⏱️ A 54-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  12. 12.⏱️ A 19-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  13. 13.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  14. 14.⏱️ A video has three clips of 9, 10 and 26 seconds. How long is the video (in seconds)?
  15. 15.⏱️ How many seconds is 7 minutes 4 seconds?
  16. 16.⏱️ How many seconds is 7 minutes 50 seconds?
  17. 17.⏱️ A video has three clips of 6, 8 and 48 seconds. How long is the video (in seconds)?
  18. 18.⏱️ How many seconds is 7 minutes 28 seconds?
  19. 19.⏱️ A 44-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  20. 20.⏱️ A 50-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  21. 21.⏱️ A video has three clips of 12, 38 and 9 seconds. How long is the video (in seconds)?
  22. 22.⏱️ How many seconds is 9 minutes 24 seconds?
  23. 23.⏱️ A 76-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  24. 24.⏱️ How many seconds is 6 minutes 9 seconds?
  25. 25.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  26. 26.⏱️ Your video must be 120 seconds long. Your clips add up to 110 seconds. How many more seconds of video do you need?
  27. 27.⏱️ A video is 210 seconds long. How long is that in minutes and seconds? (a) 3 min 0 s (b) 3 min 30 s (c) 4 min 30 s (d) 2 min 10 s
  28. 28.⏱️ A video has three clips of 7, 46 and 50 seconds. How long is the video (in seconds)?
  29. 29.⏱️ Your video must be 120 seconds long. Your clips add up to 27 seconds. How many more seconds of video do you need?
  30. 30.⏱️ How many seconds is 8 minutes 49 seconds?
  31. 31.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) the shortest clip (c) the longest clip (d) always 1 minute
  32. 32.⏱️ A video is 225 seconds long. How long is that in minutes and seconds? (a) 3 min 45 s (b) 3 min 15 s (c) 4 min 45 s (d) 2 min 25 s
  33. 33.⏱️ Your video must be 120 seconds long. Your clips add up to 104 seconds. How many more seconds of video do you need?
  34. 34.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  35. 35.⏱️ How many seconds is 5 minutes 28 seconds?
  36. 36.⏱️ How many seconds is 4 minutes 11 seconds?
  37. 37.⏱️ Your video must be 180 seconds long. Your clips add up to 42 seconds. How many more seconds of video do you need?
  38. 38.⏱️ How many seconds is 5 minutes 19 seconds?
  39. 39.⏱️ A video has three clips of 28, 58 and 54 seconds. How long is the video (in seconds)?
  40. 40.⏱️ How many seconds is 5 minutes 45 seconds?

Answer key

  1. 46
  2. 33
  3. 6 min 30 s
  4. 5 min 50 s
  5. 60
  6. 36
  7. half as long
  8. 37
  9. 79
  10. 73
  11. 27
  12. 38
  13. 50
  14. 45
  15. 424
  16. 470
  17. 62
  18. 448
  19. 11
  20. 25
  21. 59
  22. 564
  23. 19
  24. 369
  25. 28
  26. 10
  27. 3 min 30 s
  28. 103
  29. 93
  30. 529
  31. the sum of the clips
  32. 3 min 45 s
  33. 16
  34. 6
  35. 328
  36. 251
  37. 138
  38. 319
  39. 140
  40. 345

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