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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 258 · 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 17, 57 and 34 seconds. How long is the video (in seconds)?
  2. 2.⏱️ How many seconds are in 1 minute? (a) 30 (b) 10 (c) 100 (d) 60
  3. 3.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) silent (c) twice as long (d) half as long
  4. 4.⏱️ A 52-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  5. 5.⏱️ A video has three clips of 16, 50 and 20 seconds. How long is the video (in seconds)?
  6. 6.⏱️ Your video must be 90 seconds long. Your clips add up to 58 seconds. How many more seconds of video do you need?
  7. 7.⏱️ Your video must be 120 seconds long. Your clips add up to 72 seconds. How many more seconds of video do you need?
  8. 8.⏱️ A 63-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  9. 9.⏱️ A 48-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  10. 10.⏱️ A video is 215 seconds long. How long is that in minutes and seconds? (a) 3 min 35 s (b) 3 min 5 s (c) 2 min 15 s (d) 4 min 35 s
  11. 11.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  12. 12.⏱️ A video has three clips of 32, 58 and 8 seconds. How long is the video (in seconds)?
  13. 13.⏱️ How many seconds is 8 minutes 5 seconds?
  14. 14.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the longest clip (c) always 1 minute (d) the sum of the clips
  15. 15.⏱️ A 44-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  16. 16.⏱️ A 14-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  17. 17.⏱️ A video is 345 seconds long. How long is that in minutes and seconds? (a) 5 min 15 s (b) 3 min 45 s (c) 6 min 45 s (d) 5 min 45 s
  18. 18.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  19. 19.⏱️ How many seconds is 4 minutes 9 seconds?
  20. 20.⏱️ Your video must be 60 seconds long. Your clips add up to 12 seconds. How many more seconds of video do you need?
  21. 21.⏱️ A video has three clips of 18, 26 and 52 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A 36-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  23. 23.⏱️ Your video must be 180 seconds long. Your clips add up to 98 seconds. How many more seconds of video do you need?
  24. 24.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  25. 25.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  26. 26.⏱️ How many seconds is 7 minutes 45 seconds?
  27. 27.⏱️ A video is 175 seconds long. How long is that in minutes and seconds? (a) 2 min 55 s (b) 3 min 55 s (c) 1 min 75 s (d) 2 min 25 s
  28. 28.⏱️ A video is 445 seconds long. How long is that in minutes and seconds? (a) 8 min 25 s (b) 7 min 25 s (c) 7 min 55 s (d) 4 min 45 s
  29. 29.⏱️ Your video must be 90 seconds long. Your clips add up to 34 seconds. How many more seconds of video do you need?
  30. 30.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  31. 31.⏱️ A 10-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  32. 32.⏱️ A video has three clips of 46, 34 and 16 seconds. How long is the video (in seconds)?
  33. 33.⏱️ How many seconds is 1 minute 46 seconds?
  34. 34.⏱️ A video is 200 seconds long. How long is that in minutes and seconds? (a) 3 min 20 s (b) 3 min 50 s (c) 2 min 0 s (d) 4 min 20 s
  35. 35.⏱️ A 60-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  36. 36.⏱️ Your video must be 120 seconds long. Your clips add up to 8 seconds. How many more seconds of video do you need?
  37. 37.⏱️ A video is 255 seconds long. How long is that in minutes and seconds? (a) 4 min 45 s (b) 4 min 15 s (c) 5 min 15 s (d) 2 min 55 s
  38. 38.⏱️ A video is 595 seconds long. How long is that in minutes and seconds? (a) 9 min 25 s (b) 5 min 95 s (c) 9 min 55 s (d) 10 min 55 s
  39. 39.⏱️ A video is 580 seconds long. How long is that in minutes and seconds? (a) 5 min 80 s (b) 9 min 10 s (c) 9 min 40 s (d) 10 min 40 s
  40. 40.⏱️ A video has three clips of 57, 51 and 10 seconds. How long is the video (in seconds)?

Answer key

  1. 108
  2. 60
  3. half as long
  4. 13
  5. 86
  6. 32
  7. 48
  8. 21
  9. 16
  10. 3 min 35 s
  11. 60
  12. 98
  13. 485
  14. the sum of the clips
  15. 22
  16. 7
  17. 5 min 45 s
  18. 42
  19. 249
  20. 48
  21. 96
  22. 9
  23. 82
  24. 10
  25. 12
  26. 465
  27. 2 min 55 s
  28. 7 min 25 s
  29. 56
  30. 40
  31. 5
  32. 96
  33. 106
  34. 3 min 20 s
  35. 15
  36. 112
  37. 4 min 15 s
  38. 9 min 55 s
  39. 9 min 40 s
  40. 118

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