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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 210 · 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 60, 6 and 30 seconds. How long is the video (in seconds)?
  2. 2.⏱️ How many seconds is 3 minutes 55 seconds?
  3. 3.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) twice as long (c) half as long (d) the same length
  4. 4.⏱️ Your video must be 90 seconds long. Your clips add up to 38 seconds. How many more seconds of video do you need?
  5. 5.⏱️ How many seconds is 2 minutes 24 seconds?
  6. 6.⏱️ A 56-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  7. 7.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) the shortest clip (c) always 1 minute (d) the longest clip
  8. 8.⏱️ Your video must be 60 seconds long. Your clips add up to 40 seconds. How many more seconds of video do you need?
  9. 9.⏱️ A video is 240 seconds long. How long is that in minutes and seconds? (a) 4 min 0 s (b) 2 min 40 s (c) 5 min 0 s (d) 4 min 30 s
  10. 10.⏱️ A video is 590 seconds long. How long is that in minutes and seconds? (a) 5 min 90 s (b) 10 min 50 s (c) 9 min 50 s (d) 9 min 20 s
  11. 11.⏱️ A video has three clips of 21, 9 and 12 seconds. How long is the video (in seconds)?
  12. 12.⏱️ A 42-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  13. 13.⏱️ Your video must be 180 seconds long. Your clips add up to 52 seconds. How many more seconds of video do you need?
  14. 14.⏱️ A video is 400 seconds long. How long is that in minutes and seconds? (a) 7 min 40 s (b) 6 min 10 s (c) 6 min 40 s (d) 4 min 0 s
  15. 15.⏱️ A video has three clips of 48, 20 and 28 seconds. How long is the video (in seconds)?
  16. 16.⏱️ A 152-second clip is sped up to 4× 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) 3 min 45 s (b) 5 min 15 s (c) 6 min 45 s (d) 5 min 45 s
  18. 18.⏱️ A video is 415 seconds long. How long is that in minutes and seconds? (a) 4 min 15 s (b) 6 min 55 s (c) 6 min 25 s (d) 7 min 55 s
  19. 19.⏱️ How many seconds are in 1 minute? (a) 10 (b) 100 (c) 60 (d) 30
  20. 20.⏱️ Your video must be 120 seconds long. Your clips add up to 10 seconds. How many more seconds of video do you need?
  21. 21.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  22. 22.⏱️ A video is 550 seconds long. How long is that in minutes and seconds? (a) 10 min 10 s (b) 9 min 10 s (c) 5 min 50 s (d) 9 min 40 s
  23. 23.⏱️ A video has three clips of 53, 17 and 34 seconds. How long is the video (in seconds)?
  24. 24.⏱️ Your video must be 90 seconds long. Your clips add up to 63 seconds. How many more seconds of video do you need?
  25. 25.⏱️ A video has three clips of 58, 27 and 41 seconds. How long is the video (in seconds)?
  26. 26.⏱️ Your video must be 120 seconds long. Your clips add up to 54 seconds. How many more seconds of video do you need?
  27. 27.⏱️ A 148-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  28. 28.⏱️ A video is 70 seconds long. How long is that in minutes and seconds? (a) 2 min 10 s (b) 1 min 10 s (c) 3 min 10 s (d) 1 min 40 s
  29. 29.⏱️ Your video must be 60 seconds long. Your clips add up to 13 seconds. How many more seconds of video do you need?
  30. 30.⏱️ Your video must be 90 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?
  31. 31.⏱️ A 6-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 60, 19 and 13 seconds. How long is the video (in seconds)?
  33. 33.⏱️ A 22-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  34. 34.⏱️ A video has three clips of 42, 55 and 35 seconds. How long is the video (in seconds)?
  35. 35.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  36. 36.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  37. 37.⏱️ A video has three clips of 33, 25 and 60 seconds. How long is the video (in seconds)?
  38. 38.⏱️ A video has three clips of 39, 33 and 40 seconds. How long is the video (in seconds)?
  39. 39.⏱️ How many seconds is 8 minutes 1 second?
  40. 40.⏱️ Your video must be 90 seconds long. Your clips add up to 23 seconds. How many more seconds of video do you need?

Answer key

  1. 96
  2. 235
  3. half as long
  4. 52
  5. 144
  6. 28
  7. the sum of the clips
  8. 20
  9. 4 min 0 s
  10. 9 min 50 s
  11. 42
  12. 21
  13. 128
  14. 6 min 40 s
  15. 96
  16. 38
  17. 5 min 45 s
  18. 6 min 55 s
  19. 60
  20. 110
  21. 50
  22. 9 min 10 s
  23. 104
  24. 27
  25. 126
  26. 66
  27. 37
  28. 1 min 10 s
  29. 47
  30. 74
  31. 12
  32. 92
  33. 11
  34. 132
  35. 24
  36. 28
  37. 118
  38. 112
  39. 481
  40. 67

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