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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 220 · 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.⏱️ How many seconds is 9 minutes 26 seconds?
  2. 2.⏱️ An 84-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  3. 3.⏱️ A video has three clips of 22, 58 and 17 seconds. How long is the video (in seconds)?
  4. 4.⏱️ A 72-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  5. 5.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  6. 6.⏱️ A 42-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  7. 7.⏱️ A 22-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  8. 8.⏱️ Your video must be 90 seconds long. Your clips add up to 71 seconds. How many more seconds of video do you need?
  9. 9.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) twice as long (c) half as long (d) the same length
  10. 10.⏱️ A video has three clips of 49, 46 and 12 seconds. How long is the video (in seconds)?
  11. 11.⏱️ How many seconds is 2 minutes 28 seconds?
  12. 12.⏱️ How many seconds are in 1 minute? (a) 30 (b) 100 (c) 60 (d) 10
  13. 13.⏱️ A video has three clips of 10, 15 and 7 seconds. How long is the video (in seconds)?
  14. 14.⏱️ How many seconds is 2 minutes 29 seconds?
  15. 15.⏱️ A 32-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  16. 16.⏱️ A video is 530 seconds long. How long is that in minutes and seconds? (a) 8 min 50 s (b) 5 min 30 s (c) 9 min 50 s (d) 8 min 20 s
  17. 17.⏱️ A video has three clips of 57, 29 and 50 seconds. How long is the video (in seconds)?
  18. 18.⏱️ Your video must be 120 seconds long. Your clips add up to 9 seconds. How many more seconds of video do you need?
  19. 19.⏱️ How many seconds is 2 minutes 33 seconds?
  20. 20.⏱️ Your video must be 90 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?
  21. 21.⏱️ A video has three clips of 57, 6 and 35 seconds. How long is the video (in seconds)?
  22. 22.⏱️ Your video must be 120 seconds long. Your clips add up to 53 seconds. How many more seconds of video do you need?
  23. 23.⏱️ A 51-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  24. 24.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  25. 25.⏱️ A video has three clips of 16, 58 and 15 seconds. How long is the video (in seconds)?
  26. 26.⏱️ Your video must be 120 seconds long. Your clips add up to 35 seconds. How many more seconds of video do you need?
  27. 27.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the longest clip (c) always 1 minute (d) the sum of the clips
  28. 28.⏱️ How many seconds is 7 minutes 36 seconds?
  29. 29.⏱️ Your video must be 120 seconds long. Your clips add up to 14 seconds. How many more seconds of video do you need?
  30. 30.⏱️ A video is 290 seconds long. How long is that in minutes and seconds? (a) 5 min 50 s (b) 4 min 50 s (c) 2 min 90 s (d) 4 min 20 s
  31. 31.⏱️ How many seconds is 8 minutes 54 seconds?
  32. 32.⏱️ A video has three clips of 27, 34 and 38 seconds. How long is the video (in seconds)?
  33. 33.⏱️ A video has three clips of 16, 23 and 21 seconds. How long is the video (in seconds)?
  34. 34.⏱️ How many seconds is 2 minutes 9 seconds?
  35. 35.⏱️ How many seconds is 5 minutes 5 seconds?
  36. 36.⏱️ A video is 445 seconds long. How long is that in minutes and seconds? (a) 8 min 25 s (b) 7 min 55 s (c) 4 min 45 s (d) 7 min 25 s
  37. 37.⏱️ A video is 355 seconds long. How long is that in minutes and seconds? (a) 5 min 55 s (b) 6 min 55 s (c) 5 min 25 s (d) 3 min 55 s
  38. 38.⏱️ Your video must be 90 seconds long. Your clips add up to 10 seconds. How many more seconds of video do you need?
  39. 39.⏱️ A 124-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  40. 40.⏱️ A video is 125 seconds long. How long is that in minutes and seconds? (a) 1 min 25 s (b) 2 min 35 s (c) 2 min 5 s (d) 3 min 5 s

Answer key

  1. 566
  2. 21
  3. 97
  4. 24
  5. 56
  6. 14
  7. 44
  8. 19
  9. half as long
  10. 107
  11. 148
  12. 60
  13. 32
  14. 149
  15. 16
  16. 8 min 50 s
  17. 136
  18. 111
  19. 153
  20. 74
  21. 98
  22. 67
  23. 17
  24. 20
  25. 89
  26. 85
  27. the sum of the clips
  28. 456
  29. 106
  30. 4 min 50 s
  31. 534
  32. 99
  33. 60
  34. 129
  35. 305
  36. 7 min 25 s
  37. 5 min 55 s
  38. 80
  39. 31
  40. 2 min 5 s

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