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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 251 · 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 15-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  2. 2.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  3. 3.⏱️ A video has three clips of 27, 52 and 57 seconds. How long is the video (in seconds)?
  4. 4.⏱️ How many seconds is 4 minutes 8 seconds?
  5. 5.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  6. 6.⏱️ When you put clips one after another, the video length is … (a) always 1 minute (b) the shortest clip (c) the sum of the clips (d) the longest clip
  7. 7.⏱️ Your video must be 90 seconds long. Your clips add up to 19 seconds. How many more seconds of video do you need?
  8. 8.⏱️ How many seconds is 2 minutes 28 seconds?
  9. 9.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  10. 10.⏱️ How many seconds are in 1 minute? (a) 100 (b) 30 (c) 10 (d) 60
  11. 11.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) the same length (c) half as long (d) twice as long
  12. 12.⏱️ How many seconds is 9 minutes 5 seconds?
  13. 13.⏱️ Your video must be 120 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?
  14. 14.⏱️ An 8-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  15. 15.⏱️ Your video must be 120 seconds long. Your clips add up to 44 seconds. How many more seconds of video do you need?
  16. 16.⏱️ Your video must be 120 seconds long. Your clips add up to 79 seconds. How many more seconds of video do you need?
  17. 17.⏱️ A 40-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  18. 18.⏱️ How many seconds is 6 minutes 48 seconds?
  19. 19.⏱️ Your video must be 60 seconds long. Your clips add up to 13 seconds. How many more seconds of video do you need?
  20. 20.⏱️ A 38-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  21. 21.⏱️ Your video must be 180 seconds long. Your clips add up to 155 seconds. How many more seconds of video do you need?
  22. 22.⏱️ Your video must be 60 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?
  23. 23.⏱️ A 27-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  24. 24.⏱️ How many seconds is 7 minutes 11 seconds?
  25. 25.⏱️ A video has three clips of 52, 19 and 24 seconds. How long is the video (in seconds)?
  26. 26.⏱️ A video is 380 seconds long. How long is that in minutes and seconds? (a) 6 min 50 s (b) 3 min 80 s (c) 6 min 20 s (d) 7 min 20 s
  27. 27.⏱️ Your video must be 120 seconds long. Your clips add up to 17 seconds. How many more seconds of video do you need?
  28. 28.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  29. 29.⏱️ How many seconds is 9 minutes 28 seconds?
  30. 30.⏱️ How many seconds is 1 minute 59 seconds?
  31. 31.⏱️ A video is 545 seconds long. How long is that in minutes and seconds? (a) 9 min 35 s (b) 9 min 5 s (c) 10 min 5 s (d) 5 min 45 s
  32. 32.⏱️ How many seconds is 3 minutes 29 seconds?
  33. 33.⏱️ A 45-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  34. 34.⏱️ A video is 325 seconds long. How long is that in minutes and seconds? (a) 6 min 25 s (b) 3 min 25 s (c) 5 min 55 s (d) 5 min 25 s
  35. 35.⏱️ A video has three clips of 34, 46 and 53 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A video has three clips of 20, 19 and 39 seconds. How long is the video (in seconds)?
  37. 37.⏱️ A video has three clips of 45, 33 and 52 seconds. How long is the video (in seconds)?
  38. 38.⏱️ A video is 125 seconds long. How long is that in minutes and seconds? (a) 1 min 25 s (b) 2 min 5 s (c) 2 min 35 s (d) 3 min 5 s
  39. 39.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  40. 40.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?

Answer key

  1. 5
  2. 36
  3. 136
  4. 248
  5. 40
  6. the sum of the clips
  7. 71
  8. 148
  9. 60
  10. 60
  11. half as long
  12. 545
  13. 104
  14. 16
  15. 76
  16. 41
  17. 20
  18. 408
  19. 47
  20. 19
  21. 25
  22. 44
  23. 54
  24. 431
  25. 95
  26. 6 min 20 s
  27. 103
  28. 28
  29. 568
  30. 119
  31. 9 min 5 s
  32. 209
  33. 15
  34. 5 min 25 s
  35. 133
  36. 78
  37. 130
  38. 2 min 5 s
  39. 48
  40. 50

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