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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 1 · 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, 21 and 58 seconds. How long is the video (in seconds)?
  2. 2.⏱️ Your video must be 120 seconds long. Your clips add up to 111 seconds. How many more seconds of video do you need?
  3. 3.⏱️ A 23-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  4. 4.⏱️ How many seconds is 2 minutes 32 seconds?
  5. 5.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) the sum of the clips (c) always 1 minute (d) the shortest clip
  6. 6.⏱️ How many seconds is 5 minutes 31 seconds?
  7. 7.⏱️ A video is 590 seconds long. How long is that in minutes and seconds? (a) 5 min 90 s (b) 9 min 50 s (c) 9 min 20 s (d) 10 min 50 s
  8. 8.⏱️ A 21-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  9. 9.⏱️ Your video must be 90 seconds long. Your clips add up to 68 seconds. How many more seconds of video do you need?
  10. 10.⏱️ How many seconds is 7 minutes 30 seconds?
  11. 11.⏱️ Your video must be 120 seconds long. Your clips add up to 108 seconds. How many more seconds of video do you need?
  12. 12.⏱️ An 80-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  13. 13.⏱️ A video is 480 seconds long. How long is that in minutes and seconds? (a) 9 min 0 s (b) 4 min 80 s (c) 8 min 30 s (d) 8 min 0 s
  14. 14.⏱️ A video has three clips of 55, 6 and 44 seconds. How long is the video (in seconds)?
  15. 15.⏱️ How many seconds are in 1 minute? (a) 10 (b) 30 (c) 60 (d) 100
  16. 16.⏱️ Your video must be 60 seconds long. Your clips add up to 32 seconds. How many more seconds of video do you need?
  17. 17.⏱️ A video has three clips of 34, 13 and 38 seconds. How long is the video (in seconds)?
  18. 18.⏱️ A video has three clips of 37, 31 and 16 seconds. How long is the video (in seconds)?
  19. 19.⏱️ A video is 530 seconds long. How long is that in minutes and seconds? (a) 9 min 50 s (b) 8 min 50 s (c) 8 min 20 s (d) 5 min 30 s
  20. 20.⏱️ An 8-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  21. 21.⏱️ A video is 230 seconds long. How long is that in minutes and seconds? (a) 4 min 50 s (b) 3 min 50 s (c) 2 min 30 s (d) 3 min 20 s
  22. 22.⏱️ A video is 175 seconds long. How long is that in minutes and seconds? (a) 2 min 25 s (b) 1 min 75 s (c) 3 min 55 s (d) 2 min 55 s
  23. 23.⏱️ Your video must be 120 seconds long. Your clips add up to 43 seconds. How many more seconds of video do you need?
  24. 24.⏱️ A video has three clips of 16, 51 and 53 seconds. How long is the video (in seconds)?
  25. 25.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) half as long (c) twice as long (d) the same length
  26. 26.⏱️ A video is 125 seconds long. How long is that in minutes and seconds? (a) 3 min 5 s (b) 2 min 5 s (c) 2 min 35 s (d) 1 min 25 s
  27. 27.⏱️ A video has three clips of 42, 18 and 18 seconds. How long is the video (in seconds)?
  28. 28.⏱️ A video has three clips of 53, 19 and 56 seconds. How long is the video (in seconds)?
  29. 29.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  30. 30.⏱️ A video has three clips of 43, 26 and 14 seconds. How long is the video (in seconds)?
  31. 31.⏱️ A video has three clips of 45, 29 and 45 seconds. How long is the video (in seconds)?
  32. 32.⏱️ Your video must be 90 seconds long. Your clips add up to 80 seconds. How many more seconds of video do you need?
  33. 33.⏱️ How many seconds is 9 minutes 5 seconds?
  34. 34.⏱️ How many seconds is 2 minutes 46 seconds?
  35. 35.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  36. 36.⏱️ A video has three clips of 32, 45 and 30 seconds. How long is the video (in seconds)?
  37. 37.⏱️ Your video must be 120 seconds long. Your clips add up to 51 seconds. How many more seconds of video do you need?
  38. 38.⏱️ Your video must be 90 seconds long. Your clips add up to 62 seconds. How many more seconds of video do you need?
  39. 39.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  40. 40.⏱️ A 16-second clip is sped up to 2× speed. How long does it last now (in seconds)?

Answer key

  1. 96
  2. 9
  3. 46
  4. 152
  5. the sum of the clips
  6. 331
  7. 9 min 50 s
  8. 7
  9. 22
  10. 450
  11. 12
  12. 20
  13. 8 min 0 s
  14. 105
  15. 60
  16. 28
  17. 85
  18. 84
  19. 8 min 50 s
  20. 16
  21. 3 min 50 s
  22. 2 min 55 s
  23. 77
  24. 120
  25. half as long
  26. 2 min 5 s
  27. 78
  28. 128
  29. 48
  30. 83
  31. 119
  32. 10
  33. 545
  34. 166
  35. 26
  36. 107
  37. 69
  38. 28
  39. 20
  40. 8

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