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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 112 · 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 50, 41 and 28 seconds. How long is the video (in seconds)?
  2. 2.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  3. 3.⏱️ A video is 505 seconds long. How long is that in minutes and seconds? (a) 5 min 5 s (b) 8 min 55 s (c) 8 min 25 s (d) 9 min 25 s
  4. 4.⏱️ How many seconds is 6 minutes 15 seconds?
  5. 5.⏱️ Your video must be 180 seconds long. Your clips add up to 66 seconds. How many more seconds of video do you need?
  6. 6.⏱️ A video has three clips of 53, 48 and 35 seconds. How long is the video (in seconds)?
  7. 7.⏱️ A video is 350 seconds long. How long is that in minutes and seconds? (a) 3 min 50 s (b) 5 min 50 s (c) 6 min 50 s (d) 5 min 20 s
  8. 8.⏱️ How many seconds are in 1 minute? (a) 60 (b) 100 (c) 30 (d) 10
  9. 9.⏱️ Your video must be 120 seconds long. Your clips add up to 80 seconds. How many more seconds of video do you need?
  10. 10.⏱️ A video has three clips of 27, 12 and 55 seconds. How long is the video (in seconds)?
  11. 11.⏱️ A 78-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  12. 12.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) the same length (c) twice as long (d) silent
  13. 13.⏱️ How many seconds is 1 minute 58 seconds?
  14. 14.⏱️ A 160-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  15. 15.⏱️ A 99-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  16. 16.⏱️ How many seconds is 9 minutes 18 seconds?
  17. 17.⏱️ When you put clips one after another, the video length is … (a) always 1 minute (b) the longest clip (c) the sum of the clips (d) the shortest clip
  18. 18.⏱️ A 26-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  19. 19.⏱️ A video is 90 seconds long. How long is that in minutes and seconds? (a) 1 min 0 s (b) 2 min 30 s (c) 3 min 30 s (d) 1 min 30 s
  20. 20.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  21. 21.⏱️ How many seconds is 3 minutes 26 seconds?
  22. 22.⏱️ An 8-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  23. 23.⏱️ Your video must be 60 seconds long. Your clips add up to 8 seconds. How many more seconds of video do you need?
  24. 24.⏱️ How many seconds is 9 minutes 47 seconds?
  25. 25.⏱️ A video has three clips of 50, 21 and 9 seconds. How long is the video (in seconds)?
  26. 26.⏱️ A video has three clips of 56, 53 and 11 seconds. How long is the video (in seconds)?
  27. 27.⏱️ A 102-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  28. 28.⏱️ 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) 5 min 45 s (d) 10 min 5 s
  29. 29.⏱️ Your video must be 180 seconds long. Your clips add up to 21 seconds. How many more seconds of video do you need?
  30. 30.⏱️ Your video must be 120 seconds long. Your clips add up to 33 seconds. How many more seconds of video do you need?
  31. 31.⏱️ A video is 255 seconds long. How long is that in minutes and seconds? (a) 4 min 45 s (b) 2 min 55 s (c) 5 min 15 s (d) 4 min 15 s
  32. 32.⏱️ Your video must be 90 seconds long. Your clips add up to 38 seconds. How many more seconds of video do you need?
  33. 33.⏱️ How many seconds is 2 minutes 37 seconds?
  34. 34.⏱️ Your video must be 60 seconds long. Your clips add up to 14 seconds. How many more seconds of video do you need?
  35. 35.⏱️ A video has three clips of 10, 41 and 53 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A video has three clips of 12, 50 and 25 seconds. How long is the video (in seconds)?
  37. 37.⏱️ A 108-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  38. 38.⏱️ A 144-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  39. 39.⏱️ A video has three clips of 28, 17 and 36 seconds. How long is the video (in seconds)?
  40. 40.⏱️ A video has three clips of 8, 10 and 29 seconds. How long is the video (in seconds)?

Answer key

  1. 119
  2. 40
  3. 8 min 25 s
  4. 375
  5. 114
  6. 136
  7. 5 min 50 s
  8. 60
  9. 40
  10. 94
  11. 26
  12. half as long
  13. 118
  14. 40
  15. 33
  16. 558
  17. the sum of the clips
  18. 52
  19. 1 min 30 s
  20. 56
  21. 206
  22. 16
  23. 52
  24. 587
  25. 80
  26. 120
  27. 34
  28. 9 min 5 s
  29. 159
  30. 87
  31. 4 min 15 s
  32. 52
  33. 157
  34. 46
  35. 104
  36. 87
  37. 36
  38. 36
  39. 81
  40. 47

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