← Video length sums lesson New set →

Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 105 · 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 23, 50 and 38 seconds. How long is the video (in seconds)?
  2. 2.⏱️ How many seconds is 6 minutes 19 seconds?
  3. 3.⏱️ How many seconds is 6 minutes 54 seconds?
  4. 4.⏱️ A 22-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  5. 5.⏱️ A video has three clips of 20, 30 and 34 seconds. How long is the video (in seconds)?
  6. 6.⏱️ A 120-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  7. 7.⏱️ An 80-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  8. 8.⏱️ How many seconds is 9 minutes 17 seconds?
  9. 9.⏱️ How many seconds are in 1 minute? (a) 10 (b) 30 (c) 100 (d) 60
  10. 10.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  11. 11.⏱️ A 64-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  12. 12.⏱️ A video is 295 seconds long. How long is that in minutes and seconds? (a) 2 min 95 s (b) 4 min 25 s (c) 5 min 55 s (d) 4 min 55 s
  13. 13.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  14. 14.⏱️ A 10-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  15. 15.⏱️ A video has three clips of 31, 29 and 37 seconds. How long is the video (in seconds)?
  16. 16.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) twice as long (c) the same length (d) half as long
  17. 17.⏱️ A 105-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  18. 18.⏱️ A video is 115 seconds long. How long is that in minutes and seconds? (a) 1 min 15 s (b) 1 min 55 s (c) 1 min 25 s (d) 2 min 55 s
  19. 19.⏱️ A video is 530 seconds long. How long is that in minutes and seconds? (a) 8 min 50 s (b) 8 min 20 s (c) 5 min 30 s (d) 9 min 50 s
  20. 20.⏱️ A video has three clips of 56, 14 and 5 seconds. How long is the video (in seconds)?
  21. 21.⏱️ A video has three clips of 50, 58 and 28 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A video has three clips of 30, 40 and 41 seconds. How long is the video (in seconds)?
  23. 23.⏱️ A video has three clips of 27, 27 and 56 seconds. How long is the video (in seconds)?
  24. 24.⏱️ A video has three clips of 35, 45 and 35 seconds. How long is the video (in seconds)?
  25. 25.⏱️ Your video must be 90 seconds long. Your clips add up to 32 seconds. How many more seconds of video do you need?
  26. 26.⏱️ A video is 300 seconds long. How long is that in minutes and seconds? (a) 5 min 0 s (b) 6 min 0 s (c) 5 min 30 s (d) 3 min 0 s
  27. 27.⏱️ How many seconds is 9 minutes 15 seconds?
  28. 28.⏱️ How many seconds is 9 minutes 50 seconds?
  29. 29.⏱️ A video is 305 seconds long. How long is that in minutes and seconds? (a) 3 min 5 s (b) 6 min 5 s (c) 5 min 5 s (d) 5 min 35 s
  30. 30.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  31. 31.⏱️ Your video must be 90 seconds long. Your clips add up to 72 seconds. How many more seconds of video do you need?
  32. 32.⏱️ A video has three clips of 28, 5 and 40 seconds. How long is the video (in seconds)?
  33. 33.⏱️ How many seconds is 3 minutes 21 seconds?
  34. 34.⏱️ A 42-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  35. 35.⏱️ A video is 345 seconds long. How long is that in minutes and seconds? (a) 5 min 15 s (b) 5 min 45 s (c) 3 min 45 s (d) 6 min 45 s
  36. 36.⏱️ A video has three clips of 60, 10 and 5 seconds. How long is the video (in seconds)?
  37. 37.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  38. 38.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  39. 39.⏱️ A video has three clips of 24, 21 and 28 seconds. How long is the video (in seconds)?
  40. 40.⏱️ Your video must be 60 seconds long. Your clips add up to 24 seconds. How many more seconds of video do you need?

Answer key

  1. 111
  2. 379
  3. 414
  4. 44
  5. 84
  6. 40
  7. 20
  8. 557
  9. 60
  10. 40
  11. 16
  12. 4 min 55 s
  13. 36
  14. 5
  15. 97
  16. half as long
  17. 35
  18. 1 min 55 s
  19. 8 min 50 s
  20. 75
  21. 136
  22. 111
  23. 110
  24. 115
  25. 58
  26. 5 min 0 s
  27. 555
  28. 590
  29. 5 min 5 s
  30. 34
  31. 18
  32. 73
  33. 201
  34. 21
  35. 5 min 45 s
  36. 75
  37. 32
  38. 10
  39. 73
  40. 36

Free animation and design lessons, practice and worksheets at talentjr.in/animation-for-kids