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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 48 · 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 54, 49 and 12 seconds. How long is the video (in seconds)?
  2. 2.⏱️ A 99-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  3. 3.⏱️ How many seconds is 7 minutes 4 seconds?
  4. 4.⏱️ Your video must be 120 seconds long. Your clips add up to 26 seconds. How many more seconds of video do you need?
  5. 5.⏱️ Your video must be 90 seconds long. Your clips add up to 57 seconds. How many more seconds of video do you need?
  6. 6.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  7. 7.⏱️ A 136-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  8. 8.⏱️ Your video must be 90 seconds long. Your clips add up to 11 seconds. How many more seconds of video do you need?
  9. 9.⏱️ How many seconds is 5 minutes 24 seconds?
  10. 10.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  11. 11.⏱️ 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
  12. 12.⏱️ How many seconds is 6 minutes 24 seconds?
  13. 13.⏱️ A video has three clips of 55, 49 and 49 seconds. How long is the video (in seconds)?
  14. 14.⏱️ A 78-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  15. 15.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  16. 16.⏱️ How many seconds is 7 minutes 7 seconds?
  17. 17.⏱️ A video has three clips of 15, 50 and 54 seconds. How long is the video (in seconds)?
  18. 18.⏱️ How many seconds is 6 minutes 57 seconds?
  19. 19.⏱️ Your video must be 60 seconds long. Your clips add up to 38 seconds. How many more seconds of video do you need?
  20. 20.⏱️ Speeding a clip up to 2× makes it … (a) twice as long (b) silent (c) half as long (d) the same length
  21. 21.⏱️ A video is 290 seconds long. How long is that in minutes and seconds? (a) 2 min 90 s (b) 5 min 50 s (c) 4 min 50 s (d) 4 min 20 s
  22. 22.⏱️ A video has three clips of 20, 42 and 55 seconds. How long is the video (in seconds)?
  23. 23.⏱️ A video is 245 seconds long. How long is that in minutes and seconds? (a) 4 min 5 s (b) 5 min 5 s (c) 4 min 35 s (d) 2 min 45 s
  24. 24.⏱️ How many seconds is 5 minutes 37 seconds?
  25. 25.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  26. 26.⏱️ A video is 370 seconds long. How long is that in minutes and seconds? (a) 6 min 10 s (b) 3 min 70 s (c) 6 min 40 s (d) 7 min 10 s
  27. 27.⏱️ How many seconds is 9 minutes 17 seconds?
  28. 28.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  29. 29.⏱️ A video has three clips of 25, 15 and 21 seconds. How long is the video (in seconds)?
  30. 30.⏱️ Your video must be 60 seconds long. Your clips add up to 37 seconds. How many more seconds of video do you need?
  31. 31.⏱️ How many seconds is 1 minute 58 seconds?
  32. 32.⏱️ 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 25 s (d) 5 min 55 s
  33. 33.⏱️ How many seconds is 3 minutes 12 seconds?
  34. 34.⏱️ A video has three clips of 52, 32 and 49 seconds. How long is the video (in seconds)?
  35. 35.⏱️ A 96-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  36. 36.⏱️ Your video must be 180 seconds long. Your clips add up to 153 seconds. How many more seconds of video do you need?
  37. 37.⏱️ A video is 305 seconds long. How long is that in minutes and seconds? (a) 6 min 5 s (b) 3 min 5 s (c) 5 min 5 s (d) 5 min 35 s
  38. 38.⏱️ Your video must be 90 seconds long. Your clips add up to 85 seconds. How many more seconds of video do you need?
  39. 39.⏱️ Your video must be 60 seconds long. Your clips add up to 47 seconds. How many more seconds of video do you need?
  40. 40.⏱️ A video is 145 seconds long. How long is that in minutes and seconds? (a) 2 min 55 s (b) 2 min 25 s (c) 1 min 45 s (d) 3 min 25 s

Answer key

  1. 115
  2. 33
  3. 424
  4. 94
  5. 33
  6. 6
  7. 34
  8. 79
  9. 324
  10. 42
  11. the sum of the clips
  12. 384
  13. 153
  14. 39
  15. 18
  16. 427
  17. 119
  18. 417
  19. 22
  20. half as long
  21. 4 min 50 s
  22. 117
  23. 4 min 5 s
  24. 337
  25. 12
  26. 6 min 10 s
  27. 557
  28. 26
  29. 61
  30. 23
  31. 118
  32. 5 min 25 s
  33. 192
  34. 133
  35. 32
  36. 27
  37. 5 min 5 s
  38. 5
  39. 13
  40. 2 min 25 s

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