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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 59 · 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.⏱️ Your video must be 90 seconds long. Your clips add up to 75 seconds. How many more seconds of video do you need?
  2. 2.⏱️ Your video must be 90 seconds long. Your clips add up to 66 seconds. How many more seconds of video do you need?
  3. 3.⏱️ How many seconds is 9 minutes 8 seconds?
  4. 4.⏱️ A 21-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  5. 5.⏱️ Speeding a clip up to 2× makes it … (a) twice as long (b) the same length (c) silent (d) half as long
  6. 6.⏱️ A video is 465 seconds long. How long is that in minutes and seconds? (a) 7 min 15 s (b) 4 min 65 s (c) 8 min 45 s (d) 7 min 45 s
  7. 7.⏱️ A video is 100 seconds long. How long is that in minutes and seconds? (a) 1 min 10 s (b) 1 min 40 s (c) 2 min 40 s (d) 1 min 0 s
  8. 8.⏱️ Your video must be 60 seconds long. Your clips add up to 33 seconds. How many more seconds of video do you need?
  9. 9.⏱️ How many seconds is 3 minutes 34 seconds?
  10. 10.⏱️ How many seconds is 9 minutes 43 seconds?
  11. 11.⏱️ A video is 385 seconds long. How long is that in minutes and seconds? (a) 6 min 25 s (b) 6 min 55 s (c) 7 min 25 s (d) 3 min 85 s
  12. 12.⏱️ How many seconds is 7 minutes 37 seconds?
  13. 13.⏱️ Your video must be 60 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
  14. 14.⏱️ How many seconds are in 1 minute? (a) 100 (b) 60 (c) 10 (d) 30
  15. 15.⏱️ A video has three clips of 15, 29 and 40 seconds. How long is the video (in seconds)?
  16. 16.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  17. 17.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  18. 18.⏱️ Your video must be 60 seconds long. Your clips add up to 8 seconds. How many more seconds of video do you need?
  19. 19.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  20. 20.⏱️ A video is 220 seconds long. How long is that in minutes and seconds? (a) 2 min 20 s (b) 3 min 40 s (c) 4 min 40 s (d) 3 min 10 s
  21. 21.⏱️ Your video must be 120 seconds long. Your clips add up to 101 seconds. How many more seconds of video do you need?
  22. 22.⏱️ A 144-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  23. 23.⏱️ A video has three clips of 59, 49 and 54 seconds. How long is the video (in seconds)?
  24. 24.⏱️ A video has three clips of 46, 8 and 57 seconds. How long is the video (in seconds)?
  25. 25.⏱️ Your video must be 120 seconds long. Your clips add up to 95 seconds. How many more seconds of video do you need?
  26. 26.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) the shortest clip (c) the sum of the clips (d) always 1 minute
  27. 27.⏱️ A video is 315 seconds long. How long is that in minutes and seconds? (a) 3 min 15 s (b) 6 min 15 s (c) 5 min 15 s (d) 5 min 45 s
  28. 28.⏱️ How many seconds is 7 minutes 3 seconds?
  29. 29.⏱️ A 25-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 44, 8 and 36 seconds. How long is the video (in seconds)?
  31. 31.⏱️ Your video must be 60 seconds long. Your clips add up to 43 seconds. How many more seconds of video do you need?
  32. 32.⏱️ How many seconds is 1 minute 47 seconds?
  33. 33.⏱️ Your video must be 90 seconds long. Your clips add up to 81 seconds. How many more seconds of video do you need?
  34. 34.⏱️ A video is 535 seconds long. How long is that in minutes and seconds? (a) 9 min 55 s (b) 5 min 35 s (c) 8 min 25 s (d) 8 min 55 s
  35. 35.⏱️ A 75-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  36. 36.⏱️ A video has three clips of 40, 54 and 43 seconds. How long is the video (in seconds)?
  37. 37.⏱️ How many seconds is 3 minutes 15 seconds?
  38. 38.⏱️ How many seconds is 6 minutes 40 seconds?
  39. 39.⏱️ How many seconds is 3 minutes 11 seconds?
  40. 40.⏱️ A video has three clips of 11, 35 and 44 seconds. How long is the video (in seconds)?

Answer key

  1. 15
  2. 24
  3. 548
  4. 7
  5. half as long
  6. 7 min 45 s
  7. 1 min 40 s
  8. 27
  9. 214
  10. 583
  11. 6 min 25 s
  12. 457
  13. 53
  14. 60
  15. 84
  16. 40
  17. 48
  18. 52
  19. 10
  20. 3 min 40 s
  21. 19
  22. 36
  23. 162
  24. 111
  25. 25
  26. the sum of the clips
  27. 5 min 15 s
  28. 423
  29. 50
  30. 88
  31. 17
  32. 107
  33. 9
  34. 8 min 55 s
  35. 25
  36. 137
  37. 195
  38. 400
  39. 191
  40. 90

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