← Video length sums lesson New set →

Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 56 · 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 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  2. 2.⏱️ Your video must be 120 seconds long. Your clips add up to 51 seconds. How many more seconds of video do you need?
  3. 3.⏱️ A 75-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  4. 4.⏱️ A video has three clips of 25, 34 and 20 seconds. How long is the video (in seconds)?
  5. 5.⏱️ Your video must be 60 seconds long. Your clips add up to 6 seconds. How many more seconds of video do you need?
  6. 6.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) the longest clip (c) always 1 minute (d) the shortest clip
  7. 7.⏱️ A video is 255 seconds long. How long is that in minutes and seconds? (a) 4 min 15 s (b) 2 min 55 s (c) 4 min 45 s (d) 5 min 15 s
  8. 8.⏱️ An 18-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  9. 9.⏱️ A video has three clips of 34, 43 and 20 seconds. How long is the video (in seconds)?
  10. 10.⏱️ A video has three clips of 8, 30 and 12 seconds. How long is the video (in seconds)?
  11. 11.⏱️ How many seconds are in 1 minute? (a) 30 (b) 10 (c) 60 (d) 100
  12. 12.⏱️ A video has three clips of 41, 9 and 13 seconds. How long is the video (in seconds)?
  13. 13.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  14. 14.⏱️ A video has three clips of 46, 32 and 34 seconds. How long is the video (in seconds)?
  15. 15.⏱️ Your video must be 60 seconds long. Your clips add up to 22 seconds. How many more seconds of video do you need?
  16. 16.⏱️ A 16-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  17. 17.⏱️ A video is 510 seconds long. How long is that in minutes and seconds? (a) 8 min 30 s (b) 9 min 30 s (c) 5 min 10 s (d) 8 min 0 s
  18. 18.⏱️ A video has three clips of 38, 56 and 51 seconds. How long is the video (in seconds)?
  19. 19.⏱️ 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) 4 min 80 s (d) 8 min 0 s
  20. 20.⏱️ A 22-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  21. 21.⏱️ Your video must be 60 seconds long. Your clips add up to 18 seconds. How many more seconds of video do you need?
  22. 22.⏱️ How many seconds is 9 minutes 10 seconds?
  23. 23.⏱️ A 72-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  24. 24.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  25. 25.⏱️ A 99-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  26. 26.⏱️ A video is 385 seconds long. How long is that in minutes and seconds? (a) 6 min 55 s (b) 7 min 25 s (c) 3 min 85 s (d) 6 min 25 s
  27. 27.⏱️ How many seconds is 2 minutes 41 seconds?
  28. 28.⏱️ How many seconds is 6 minutes 24 seconds?
  29. 29.⏱️ A 15-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  30. 30.⏱️ A video has three clips of 7, 54 and 21 seconds. How long is the video (in seconds)?
  31. 31.⏱️ An 88-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  32. 32.⏱️ A video is 335 seconds long. How long is that in minutes and seconds? (a) 3 min 35 s (b) 6 min 35 s (c) 5 min 5 s (d) 5 min 35 s
  33. 33.⏱️ A video is 125 seconds long. How long is that in minutes and seconds? (a) 1 min 25 s (b) 3 min 5 s (c) 2 min 5 s (d) 2 min 35 s
  34. 34.⏱️ Your video must be 60 seconds long. Your clips add up to 41 seconds. How many more seconds of video do you need?
  35. 35.⏱️ A video has three clips of 9, 13 and 15 seconds. How long is the video (in seconds)?
  36. 36.⏱️ How many seconds is 9 minutes 54 seconds?
  37. 37.⏱️ A video has three clips of 55, 14 and 57 seconds. How long is the video (in seconds)?
  38. 38.⏱️ A video has three clips of 44, 41 and 45 seconds. How long is the video (in seconds)?
  39. 39.⏱️ A video has three clips of 13, 47 and 5 seconds. How long is the video (in seconds)?
  40. 40.⏱️ A video is 285 seconds long. How long is that in minutes and seconds? (a) 2 min 85 s (b) 5 min 45 s (c) 4 min 15 s (d) 4 min 45 s

Answer key

  1. 40
  2. 69
  3. 25
  4. 79
  5. 54
  6. the sum of the clips
  7. 4 min 15 s
  8. 6
  9. 97
  10. 50
  11. 60
  12. 63
  13. 12
  14. 112
  15. 38
  16. 8
  17. 8 min 30 s
  18. 145
  19. 8 min 0 s
  20. 44
  21. 42
  22. 550
  23. 36
  24. 48
  25. 33
  26. 6 min 25 s
  27. 161
  28. 384
  29. 5
  30. 82
  31. 22
  32. 5 min 35 s
  33. 2 min 5 s
  34. 19
  35. 37
  36. 594
  37. 126
  38. 130
  39. 65
  40. 4 min 45 s

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