← Video length sums lesson New set →

Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 70 · 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.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) the same length (c) half as long (d) twice as long
  2. 2.⏱️ How many seconds is 4 minutes 8 seconds?
  3. 3.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  4. 4.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  5. 5.⏱️ A video is 495 seconds long. How long is that in minutes and seconds? (a) 9 min 15 s (b) 8 min 45 s (c) 8 min 15 s (d) 4 min 95 s
  6. 6.⏱️ A 42-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  7. 7.⏱️ How many seconds are in 1 minute? (a) 30 (b) 100 (c) 60 (d) 10
  8. 8.⏱️ How many seconds is 9 minutes 38 seconds?
  9. 9.⏱️ Your video must be 120 seconds long. Your clips add up to 60 seconds. How many more seconds of video do you need?
  10. 10.⏱️ A video has three clips of 7, 9 and 6 seconds. How long is the video (in seconds)?
  11. 11.⏱️ Your video must be 180 seconds long. Your clips add up to 136 seconds. How many more seconds of video do you need?
  12. 12.⏱️ Your video must be 180 seconds long. Your clips add up to 47 seconds. How many more seconds of video do you need?
  13. 13.⏱️ Your video must be 90 seconds long. Your clips add up to 38 seconds. How many more seconds of video do you need?
  14. 14.⏱️ A video has three clips of 47, 12 and 12 seconds. How long is the video (in seconds)?
  15. 15.⏱️ Your video must be 90 seconds long. Your clips add up to 18 seconds. How many more seconds of video do you need?
  16. 16.⏱️ A video has three clips of 44, 31 and 15 seconds. How long is the video (in seconds)?
  17. 17.⏱️ A 64-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  18. 18.⏱️ An 87-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  19. 19.⏱️ How many seconds is 3 minutes 4 seconds?
  20. 20.⏱️ Your video must be 180 seconds long. Your clips add up to 65 seconds. How many more seconds of video do you need?
  21. 21.⏱️ A video is 280 seconds long. How long is that in minutes and seconds? (a) 5 min 40 s (b) 4 min 40 s (c) 4 min 10 s (d) 2 min 80 s
  22. 22.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  23. 23.⏱️ Your video must be 60 seconds long. Your clips add up to 31 seconds. How many more seconds of video do you need?
  24. 24.⏱️ A 28-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  25. 25.⏱️ A video is 375 seconds long. How long is that in minutes and seconds? (a) 6 min 15 s (b) 3 min 75 s (c) 7 min 15 s (d) 6 min 45 s
  26. 26.⏱️ A video has three clips of 51, 51 and 57 seconds. How long is the video (in seconds)?
  27. 27.⏱️ Your video must be 90 seconds long. Your clips add up to 63 seconds. How many more seconds of video do you need?
  28. 28.⏱️ Your video must be 120 seconds long. Your clips add up to 92 seconds. How many more seconds of video do you need?
  29. 29.⏱️ A video has three clips of 5, 18 and 41 seconds. How long is the video (in seconds)?
  30. 30.⏱️ A 99-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  31. 31.⏱️ A video has three clips of 21, 31 and 43 seconds. How long is the video (in seconds)?
  32. 32.⏱️ A video is 530 seconds long. How long is that in minutes and seconds? (a) 9 min 50 s (b) 5 min 30 s (c) 8 min 20 s (d) 8 min 50 s
  33. 33.⏱️ How many seconds is 2 minutes 7 seconds?
  34. 34.⏱️ A 72-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  35. 35.⏱️ A 60-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  36. 36.⏱️ A 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  37. 37.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  38. 38.⏱️ A video has three clips of 7, 30 and 37 seconds. How long is the video (in seconds)?
  39. 39.⏱️ A video has three clips of 10, 12 and 19 seconds. How long is the video (in seconds)?
  40. 40.⏱️ How many seconds is 9 minutes 17 seconds?

Answer key

  1. half as long
  2. 248
  3. 34
  4. 36
  5. 8 min 15 s
  6. 21
  7. 60
  8. 578
  9. 60
  10. 22
  11. 44
  12. 133
  13. 52
  14. 71
  15. 72
  16. 90
  17. 32
  18. 29
  19. 184
  20. 115
  21. 4 min 40 s
  22. 14
  23. 29
  24. 14
  25. 6 min 15 s
  26. 159
  27. 27
  28. 28
  29. 64
  30. 33
  31. 95
  32. 8 min 50 s
  33. 127
  34. 18
  35. 20
  36. 30
  37. 48
  38. 74
  39. 41
  40. 557

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