← Video length sums lesson New set →

Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 299 · 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 120 seconds long. Your clips add up to 37 seconds. How many more seconds of video do you need?
  2. 2.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  3. 3.⏱️ How many seconds is 3 minutes 12 seconds?
  4. 4.⏱️ A video is 125 seconds long. How long is that in minutes and seconds? (a) 3 min 5 s (b) 2 min 5 s (c) 1 min 25 s (d) 2 min 35 s
  5. 5.⏱️ How many seconds is 8 minutes 3 seconds?
  6. 6.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  7. 7.⏱️ Speeding a clip up to 2× makes it … (a) twice as long (b) the same length (c) half as long (d) silent
  8. 8.⏱️ How many seconds is 5 minutes 20 seconds?
  9. 9.⏱️ A 52-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  10. 10.⏱️ How many seconds are in 1 minute? (a) 60 (b) 30 (c) 100 (d) 10
  11. 11.⏱️ A video has three clips of 24, 23 and 28 seconds. How long is the video (in seconds)?
  12. 12.⏱️ Your video must be 60 seconds long. Your clips add up to 14 seconds. How many more seconds of video do you need?
  13. 13.⏱️ A video is 575 seconds long. How long is that in minutes and seconds? (a) 10 min 35 s (b) 5 min 75 s (c) 9 min 35 s (d) 9 min 5 s
  14. 14.⏱️ A 104-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  15. 15.⏱️ How many seconds is 7 minutes 31 seconds?
  16. 16.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  17. 17.⏱️ Your video must be 60 seconds long. Your clips add up to 43 seconds. How many more seconds of video do you need?
  18. 18.⏱️ Your video must be 180 seconds long. Your clips add up to 32 seconds. How many more seconds of video do you need?
  19. 19.⏱️ Your video must be 60 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
  20. 20.⏱️ A video is 170 seconds long. How long is that in minutes and seconds? (a) 1 min 70 s (b) 2 min 50 s (c) 3 min 50 s (d) 2 min 20 s
  21. 21.⏱️ A 23-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  22. 22.⏱️ A video is 550 seconds long. How long is that in minutes and seconds? (a) 10 min 10 s (b) 9 min 40 s (c) 5 min 50 s (d) 9 min 10 s
  23. 23.⏱️ A video has three clips of 60, 17 and 56 seconds. How long is the video (in seconds)?
  24. 24.⏱️ A video is 235 seconds long. How long is that in minutes and seconds? (a) 3 min 55 s (b) 4 min 55 s (c) 3 min 25 s (d) 2 min 35 s
  25. 25.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  26. 26.⏱️ How many seconds is 8 minutes 38 seconds?
  27. 27.⏱️ A video has three clips of 35, 44 and 25 seconds. How long is the video (in seconds)?
  28. 28.⏱️ How many seconds is 8 minutes 27 seconds?
  29. 29.⏱️ A video is 385 seconds long. How long is that in minutes and seconds? (a) 3 min 85 s (b) 6 min 25 s (c) 6 min 55 s (d) 7 min 25 s
  30. 30.⏱️ A video has three clips of 22, 55 and 13 seconds. How long is the video (in seconds)?
  31. 31.⏱️ A video has three clips of 16, 32 and 40 seconds. How long is the video (in seconds)?
  32. 32.⏱️ A 72-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  33. 33.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  34. 34.⏱️ A video has three clips of 17, 59 and 5 seconds. How long is the video (in seconds)?
  35. 35.⏱️ Your video must be 180 seconds long. Your clips add up to 129 seconds. How many more seconds of video do you need?
  36. 36.⏱️ A 26-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  37. 37.⏱️ How many seconds is 6 minutes 33 seconds?
  38. 38.⏱️ How many seconds is 6 minutes 7 seconds?
  39. 39.⏱️ How many seconds is 9 minutes 48 seconds?
  40. 40.⏱️ A 16-second clip is sped up to 2× speed. How long does it last now (in seconds)?

Answer key

  1. 83
  2. 20
  3. 192
  4. 2 min 5 s
  5. 483
  6. 32
  7. half as long
  8. 320
  9. 13
  10. 60
  11. 75
  12. 46
  13. 9 min 35 s
  14. 26
  15. 451
  16. 10
  17. 17
  18. 148
  19. 53
  20. 2 min 50 s
  21. 46
  22. 9 min 10 s
  23. 133
  24. 3 min 55 s
  25. 36
  26. 518
  27. 104
  28. 507
  29. 6 min 25 s
  30. 90
  31. 88
  32. 18
  33. 26
  34. 81
  35. 51
  36. 13
  37. 393
  38. 367
  39. 588
  40. 8

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