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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 240 · 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 31, 17 and 36 seconds. How long is the video (in seconds)?
  2. 2.⏱️ Your video must be 180 seconds long. Your clips add up to 20 seconds. How many more seconds of video do you need?
  3. 3.⏱️ Your video must be 180 seconds long. Your clips add up to 171 seconds. How many more seconds of video do you need?
  4. 4.⏱️ How many seconds are in 1 minute? (a) 10 (b) 100 (c) 60 (d) 30
  5. 5.⏱️ A video has three clips of 51, 28 and 12 seconds. How long is the video (in seconds)?
  6. 6.⏱️ A video is 480 seconds long. How long is that in minutes and seconds? (a) 9 min 0 s (b) 8 min 30 s (c) 8 min 0 s (d) 4 min 80 s
  7. 7.⏱️ A video is 550 seconds long. How long is that in minutes and seconds? (a) 9 min 10 s (b) 9 min 40 s (c) 10 min 10 s (d) 5 min 50 s
  8. 8.⏱️ How many seconds is 6 minutes 1 second?
  9. 9.⏱️ A video is 120 seconds long. How long is that in minutes and seconds? (a) 1 min 20 s (b) 3 min 0 s (c) 2 min 30 s (d) 2 min 0 s
  10. 10.⏱️ A 111-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  11. 11.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) the same length (c) twice as long (d) half as long
  12. 12.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  13. 13.⏱️ When you put clips one after another, the video length is … (a) always 1 minute (b) the shortest clip (c) the sum of the clips (d) the longest clip
  14. 14.⏱️ A video has three clips of 44, 42 and 53 seconds. How long is the video (in seconds)?
  15. 15.⏱️ A video has three clips of 51, 57 and 32 seconds. How long is the video (in seconds)?
  16. 16.⏱️ How many seconds is 5 minutes 35 seconds?
  17. 17.⏱️ Your video must be 90 seconds long. Your clips add up to 47 seconds. How many more seconds of video do you need?
  18. 18.⏱️ How many seconds is 2 minutes 16 seconds?
  19. 19.⏱️ How many seconds is 9 minutes 38 seconds?
  20. 20.⏱️ How many seconds is 3 minutes 35 seconds?
  21. 21.⏱️ A video has three clips of 22, 45 and 54 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A video has three clips of 16, 15 and 40 seconds. How long is the video (in seconds)?
  23. 23.⏱️ A video is 220 seconds long. How long is that in minutes and seconds? (a) 4 min 40 s (b) 3 min 40 s (c) 2 min 20 s (d) 3 min 10 s
  24. 24.⏱️ A video has three clips of 22, 25 and 31 seconds. How long is the video (in seconds)?
  25. 25.⏱️ A video has three clips of 5, 50 and 50 seconds. How long is the video (in seconds)?
  26. 26.⏱️ How many seconds is 3 minutes 16 seconds?
  27. 27.⏱️ A video is 455 seconds long. How long is that in minutes and seconds? (a) 7 min 5 s (b) 7 min 35 s (c) 4 min 55 s (d) 8 min 35 s
  28. 28.⏱️ How many seconds is 7 minutes 7 seconds?
  29. 29.⏱️ How many seconds is 1 minute 52 seconds?
  30. 30.⏱️ How many seconds is 3 minutes 57 seconds?
  31. 31.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  32. 32.⏱️ A 36-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  33. 33.⏱️ How many seconds is 3 minutes 56 seconds?
  34. 34.⏱️ Your video must be 90 seconds long. Your clips add up to 64 seconds. How many more seconds of video do you need?
  35. 35.⏱️ A video has three clips of 46, 18 and 36 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A 42-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  37. 37.⏱️ How many seconds is 8 minutes 35 seconds?
  38. 38.⏱️ An 8-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  39. 39.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  40. 40.⏱️ A 148-second clip is sped up to 4× speed. How long does it last now (in seconds)?

Answer key

  1. 84
  2. 160
  3. 9
  4. 60
  5. 91
  6. 8 min 0 s
  7. 9 min 10 s
  8. 361
  9. 2 min 0 s
  10. 37
  11. half as long
  12. 42
  13. the sum of the clips
  14. 139
  15. 140
  16. 335
  17. 43
  18. 136
  19. 578
  20. 215
  21. 121
  22. 71
  23. 3 min 40 s
  24. 78
  25. 105
  26. 196
  27. 7 min 35 s
  28. 427
  29. 112
  30. 237
  31. 10
  32. 18
  33. 236
  34. 26
  35. 100
  36. 14
  37. 515
  38. 16
  39. 6
  40. 37

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