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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 50 · 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 59, 34 and 8 seconds. How long is the video (in seconds)?
  2. 2.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  3. 3.⏱️ A video has three clips of 7, 39 and 18 seconds. How long is the video (in seconds)?
  4. 4.⏱️ A video has three clips of 14, 43 and 32 seconds. How long is the video (in seconds)?
  5. 5.⏱️ A video has three clips of 45, 14 and 18 seconds. How long is the video (in seconds)?
  6. 6.⏱️ How many seconds is 7 minutes 2 seconds?
  7. 7.⏱️ A video has three clips of 24, 60 and 23 seconds. How long is the video (in seconds)?
  8. 8.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  9. 9.⏱️ A video is 395 seconds long. How long is that in minutes and seconds? (a) 3 min 95 s (b) 6 min 35 s (c) 6 min 5 s (d) 7 min 35 s
  10. 10.⏱️ How many seconds is 4 minutes 16 seconds?
  11. 11.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  12. 12.⏱️ A 16-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  13. 13.⏱️ A video is 470 seconds long. How long is that in minutes and seconds? (a) 7 min 50 s (b) 4 min 70 s (c) 7 min 20 s (d) 8 min 50 s
  14. 14.⏱️ Speeding a clip up to 2× makes it … (a) twice as long (b) silent (c) the same length (d) half as long
  15. 15.⏱️ How many seconds are in 1 minute? (a) 30 (b) 100 (c) 60 (d) 10
  16. 16.⏱️ A video is 490 seconds long. How long is that in minutes and seconds? (a) 4 min 90 s (b) 8 min 40 s (c) 9 min 10 s (d) 8 min 10 s
  17. 17.⏱️ A 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  18. 18.⏱️ A video has three clips of 11, 60 and 54 seconds. How long is the video (in seconds)?
  19. 19.⏱️ How many seconds is 1 minute 26 seconds?
  20. 20.⏱️ A video is 315 seconds long. How long is that in minutes and seconds? (a) 6 min 15 s (b) 5 min 45 s (c) 5 min 15 s (d) 3 min 15 s
  21. 21.⏱️ A video has three clips of 56, 54 and 28 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A video is 190 seconds long. How long is that in minutes and seconds? (a) 4 min 10 s (b) 1 min 90 s (c) 3 min 40 s (d) 3 min 10 s
  23. 23.⏱️ How many seconds is 8 minutes 25 seconds?
  24. 24.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  25. 25.⏱️ A video is 495 seconds long. How long is that in minutes and seconds? (a) 9 min 15 s (b) 4 min 95 s (c) 8 min 15 s (d) 8 min 45 s
  26. 26.⏱️ An 8-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  27. 27.⏱️ A video is 525 seconds long. How long is that in minutes and seconds? (a) 8 min 15 s (b) 5 min 25 s (c) 8 min 45 s (d) 9 min 45 s
  28. 28.⏱️ A video has three clips of 30, 42 and 21 seconds. How long is the video (in seconds)?
  29. 29.⏱️ A video has three clips of 25, 45 and 56 seconds. How long is the video (in seconds)?
  30. 30.⏱️ A video has three clips of 25, 53 and 49 seconds. How long is the video (in seconds)?
  31. 31.⏱️ How many seconds is 4 minutes 55 seconds?
  32. 32.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  33. 33.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) always 1 minute (c) the shortest clip (d) the longest clip
  34. 34.⏱️ A video is 575 seconds long. How long is that in minutes and seconds? (a) 5 min 75 s (b) 10 min 35 s (c) 9 min 5 s (d) 9 min 35 s
  35. 35.⏱️ A video has three clips of 50, 38 and 7 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A video is 225 seconds long. How long is that in minutes and seconds? (a) 3 min 45 s (b) 3 min 15 s (c) 2 min 25 s (d) 4 min 45 s
  37. 37.⏱️ How many seconds is 3 minutes 32 seconds?
  38. 38.⏱️ Your video must be 90 seconds long. Your clips add up to 41 seconds. How many more seconds of video do you need?
  39. 39.⏱️ How many seconds is 7 minutes 39 seconds?
  40. 40.⏱️ A video has three clips of 12, 29 and 11 seconds. How long is the video (in seconds)?

Answer key

  1. 101
  2. 18
  3. 64
  4. 89
  5. 77
  6. 422
  7. 107
  8. 42
  9. 6 min 35 s
  10. 256
  11. 28
  12. 8
  13. 7 min 50 s
  14. half as long
  15. 60
  16. 8 min 10 s
  17. 30
  18. 125
  19. 86
  20. 5 min 15 s
  21. 138
  22. 3 min 10 s
  23. 505
  24. 60
  25. 8 min 15 s
  26. 16
  27. 8 min 45 s
  28. 93
  29. 126
  30. 127
  31. 295
  32. 12
  33. the sum of the clips
  34. 9 min 35 s
  35. 95
  36. 3 min 45 s
  37. 212
  38. 49
  39. 459
  40. 52

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