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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 141 · 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 video has three clips of 14, 17 and 35 seconds. How long is the video (in seconds)?
  2. 2.⏱️ How many seconds is 3 minutes 19 seconds?
  3. 3.⏱️ A 21-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  4. 4.⏱️ Your video must be 60 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
  5. 5.⏱️ How many seconds is 7 minutes 50 seconds?
  6. 6.⏱️ A video has three clips of 54, 21 and 5 seconds. How long is the video (in seconds)?
  7. 7.⏱️ How many seconds is 8 minutes 13 seconds?
  8. 8.⏱️ How many seconds are in 1 minute? (a) 100 (b) 60 (c) 30 (d) 10
  9. 9.⏱️ 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
  10. 10.⏱️ How many seconds is 4 minutes 7 seconds?
  11. 11.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  12. 12.⏱️ A video is 575 seconds long. How long is that in minutes and seconds? (a) 9 min 5 s (b) 9 min 35 s (c) 5 min 75 s (d) 10 min 35 s
  13. 13.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  14. 14.⏱️ A video is 65 seconds long. How long is that in minutes and seconds? (a) 1 min 35 s (b) 2 min 5 s (c) 1 min 5 s (d) 3 min 5 s
  15. 15.⏱️ A video has three clips of 59, 40 and 46 seconds. How long is the video (in seconds)?
  16. 16.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) silent (c) twice as long (d) the same length
  17. 17.⏱️ Your video must be 60 seconds long. Your clips add up to 50 seconds. How many more seconds of video do you need?
  18. 18.⏱️ How many seconds is 1 minute 38 seconds?
  19. 19.⏱️ Your video must be 120 seconds long. Your clips add up to 102 seconds. How many more seconds of video do you need?
  20. 20.⏱️ A video has three clips of 5, 25 and 33 seconds. How long is the video (in seconds)?
  21. 21.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  22. 22.⏱️ A video is 220 seconds long. How long is that in minutes and seconds? (a) 3 min 10 s (b) 3 min 40 s (c) 2 min 20 s (d) 4 min 40 s
  23. 23.⏱️ How many seconds is 6 minutes 52 seconds?
  24. 24.⏱️ Your video must be 120 seconds long. Your clips add up to 45 seconds. How many more seconds of video do you need?
  25. 25.⏱️ How many seconds is 3 minutes 47 seconds?
  26. 26.⏱️ How many seconds is 7 minutes 39 seconds?
  27. 27.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  28. 28.⏱️ Your video must be 120 seconds long. Your clips add up to 77 seconds. How many more seconds of video do you need?
  29. 29.⏱️ A video is 530 seconds long. How long is that in minutes and seconds? (a) 8 min 20 s (b) 9 min 50 s (c) 5 min 30 s (d) 8 min 50 s
  30. 30.⏱️ Your video must be 120 seconds long. Your clips add up to 32 seconds. How many more seconds of video do you need?
  31. 31.⏱️ Your video must be 90 seconds long. Your clips add up to 84 seconds. How many more seconds of video do you need?
  32. 32.⏱️ A video has three clips of 33, 20 and 17 seconds. How long is the video (in seconds)?
  33. 33.⏱️ A 33-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  34. 34.⏱️ An 88-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  35. 35.⏱️ Your video must be 60 seconds long. Your clips add up to 9 seconds. How many more seconds of video do you need?
  36. 36.⏱️ A 16-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  37. 37.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  38. 38.⏱️ A video has three clips of 17, 34 and 7 seconds. How long is the video (in seconds)?
  39. 39.⏱️ A 26-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  40. 40.⏱️ A 42-second clip is sped up to 3× speed. How long does it last now (in seconds)?

Answer key

  1. 66
  2. 199
  3. 7
  4. 53
  5. 470
  6. 80
  7. 493
  8. 60
  9. the sum of the clips
  10. 247
  11. 10
  12. 9 min 35 s
  13. 32
  14. 1 min 5 s
  15. 145
  16. half as long
  17. 10
  18. 98
  19. 18
  20. 63
  21. 50
  22. 3 min 40 s
  23. 412
  24. 75
  25. 227
  26. 459
  27. 18
  28. 43
  29. 8 min 50 s
  30. 88
  31. 6
  32. 70
  33. 11
  34. 22
  35. 51
  36. 8
  37. 56
  38. 58
  39. 52
  40. 14

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