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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 225 · 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 12-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  2. 2.⏱️ How many seconds is 4 minutes 48 seconds?
  3. 3.⏱️ Your video must be 180 seconds long. Your clips add up to 78 seconds. How many more seconds of video do you need?
  4. 4.⏱️ Your video must be 180 seconds long. Your clips add up to 102 seconds. How many more seconds of video do you need?
  5. 5.⏱️ A video has three clips of 25, 50 and 46 seconds. How long is the video (in seconds)?
  6. 6.⏱️ Your video must be 60 seconds long. Your clips add up to 36 seconds. How many more seconds of video do you need?
  7. 7.⏱️ How many seconds are in 1 minute? (a) 30 (b) 10 (c) 100 (d) 60
  8. 8.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  9. 9.⏱️ Your video must be 90 seconds long. Your clips add up to 58 seconds. How many more seconds of video do you need?
  10. 10.⏱️ A video is 125 seconds long. How long is that in minutes and seconds? (a) 3 min 5 s (b) 2 min 35 s (c) 2 min 5 s (d) 1 min 25 s
  11. 11.⏱️ Your video must be 60 seconds long. Your clips add up to 38 seconds. How many more seconds of video do you need?
  12. 12.⏱️ A video has three clips of 49, 7 and 56 seconds. How long is the video (in seconds)?
  13. 13.⏱️ A video is 150 seconds long. How long is that in minutes and seconds? (a) 1 min 50 s (b) 2 min 0 s (c) 2 min 30 s (d) 3 min 30 s
  14. 14.⏱️ A video has three clips of 15, 12 and 48 seconds. How long is the video (in seconds)?
  15. 15.⏱️ A video is 195 seconds long. How long is that in minutes and seconds? (a) 1 min 95 s (b) 3 min 45 s (c) 4 min 15 s (d) 3 min 15 s
  16. 16.⏱️ How many seconds is 1 minute 25 seconds?
  17. 17.⏱️ Your video must be 120 seconds long. Your clips add up to 88 seconds. How many more seconds of video do you need?
  18. 18.⏱️ A video has three clips of 16, 52 and 57 seconds. How long is the video (in seconds)?
  19. 19.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) always 1 minute (c) the sum of the clips (d) the longest clip
  20. 20.⏱️ Your video must be 60 seconds long. Your clips add up to 45 seconds. How many more seconds of video do you need?
  21. 21.⏱️ Your video must be 60 seconds long. Your clips add up to 35 seconds. How many more seconds of video do you need?
  22. 22.⏱️ A 93-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  23. 23.⏱️ A 78-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  24. 24.⏱️ How many seconds is 7 minutes 12 seconds?
  25. 25.⏱️ A video has three clips of 49, 8 and 42 seconds. How long is the video (in seconds)?
  26. 26.⏱️ Your video must be 180 seconds long. Your clips add up to 164 seconds. How many more seconds of video do you need?
  27. 27.⏱️ Speeding a clip up to 2× makes it … (a) half as long (b) the same length (c) silent (d) twice as long
  28. 28.⏱️ Your video must be 180 seconds long. Your clips add up to 20 seconds. How many more seconds of video do you need?
  29. 29.⏱️ How many seconds is 3 minutes 49 seconds?
  30. 30.⏱️ Your video must be 120 seconds long. Your clips add up to 64 seconds. How many more seconds of video do you need?
  31. 31.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  32. 32.⏱️ A video has three clips of 20, 58 and 14 seconds. How long is the video (in seconds)?
  33. 33.⏱️ A 24-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  34. 34.⏱️ A 50-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  35. 35.⏱️ A video has three clips of 38, 34 and 18 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A video has three clips of 28, 10 and 38 seconds. How long is the video (in seconds)?
  37. 37.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  38. 38.⏱️ Your video must be 120 seconds long. Your clips add up to 90 seconds. How many more seconds of video do you need?
  39. 39.⏱️ A video has three clips of 57, 6 and 27 seconds. How long is the video (in seconds)?
  40. 40.⏱️ A video has three clips of 9, 23 and 31 seconds. How long is the video (in seconds)?

Answer key

  1. 6
  2. 288
  3. 102
  4. 78
  5. 121
  6. 24
  7. 60
  8. 48
  9. 32
  10. 2 min 5 s
  11. 22
  12. 112
  13. 2 min 30 s
  14. 75
  15. 3 min 15 s
  16. 85
  17. 32
  18. 125
  19. the sum of the clips
  20. 15
  21. 25
  22. 31
  23. 39
  24. 432
  25. 99
  26. 16
  27. half as long
  28. 160
  29. 229
  30. 56
  31. 28
  32. 92
  33. 8
  34. 25
  35. 90
  36. 76
  37. 24
  38. 30
  39. 90
  40. 63

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