← Video length sums lesson New set →

Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 297 · 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.⏱️ How many seconds is 9 minutes 59 seconds?
  2. 2.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  3. 3.⏱️ Your video must be 90 seconds long. Your clips add up to 25 seconds. How many more seconds of video do you need?
  4. 4.⏱️ A 16-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  5. 5.⏱️ A 26-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  6. 6.⏱️ A 66-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  7. 7.⏱️ A video has three clips of 22, 48 and 60 seconds. How long is the video (in seconds)?
  8. 8.⏱️ A video has three clips of 52, 55 and 12 seconds. How long is the video (in seconds)?
  9. 9.⏱️ How many seconds are in 1 minute? (a) 10 (b) 60 (c) 30 (d) 100
  10. 10.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  11. 11.⏱️ A video is 255 seconds long. How long is that in minutes and seconds? (a) 2 min 55 s (b) 4 min 45 s (c) 4 min 15 s (d) 5 min 15 s
  12. 12.⏱️ Your video must be 180 seconds long. Your clips add up to 158 seconds. How many more seconds of video do you need?
  13. 13.⏱️ Your video must be 120 seconds long. Your clips add up to 68 seconds. How many more seconds of video do you need?
  14. 14.⏱️ A video has three clips of 14, 42 and 53 seconds. How long is the video (in seconds)?
  15. 15.⏱️ A 45-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  16. 16.⏱️ A video is 355 seconds long. How long is that in minutes and seconds? (a) 5 min 55 s (b) 5 min 25 s (c) 3 min 55 s (d) 6 min 55 s
  17. 17.⏱️ A 75-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  18. 18.⏱️ An 18-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  19. 19.⏱️ Your video must be 120 seconds long. Your clips add up to 36 seconds. How many more seconds of video do you need?
  20. 20.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  21. 21.⏱️ A video has three clips of 13, 30 and 17 seconds. How long is the video (in seconds)?
  22. 22.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  23. 23.⏱️ A 27-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  24. 24.⏱️ A video has three clips of 22, 60 and 42 seconds. How long is the video (in seconds)?
  25. 25.⏱️ Your video must be 60 seconds long. Your clips add up to 17 seconds. How many more seconds of video do you need?
  26. 26.⏱️ A 20-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  27. 27.⏱️ Your video must be 180 seconds long. Your clips add up to 11 seconds. How many more seconds of video do you need?
  28. 28.⏱️ A video has three clips of 12, 34 and 23 seconds. How long is the video (in seconds)?
  29. 29.⏱️ A 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  30. 30.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) the shortest clip (c) always 1 minute (d) the sum of the clips
  31. 31.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) silent (c) half as long (d) twice as long
  32. 32.⏱️ Your video must be 180 seconds long. Your clips add up to 85 seconds. How many more seconds of video do you need?
  33. 33.⏱️ A video is 410 seconds long. How long is that in minutes and seconds? (a) 6 min 20 s (b) 4 min 10 s (c) 6 min 50 s (d) 7 min 50 s
  34. 34.⏱️ Your video must be 120 seconds long. Your clips add up to 47 seconds. How many more seconds of video do you need?
  35. 35.⏱️ A video is 300 seconds long. How long is that in minutes and seconds? (a) 5 min 30 s (b) 3 min 0 s (c) 6 min 0 s (d) 5 min 0 s
  36. 36.⏱️ Your video must be 120 seconds long. Your clips add up to 15 seconds. How many more seconds of video do you need?
  37. 37.⏱️ How many seconds is 7 minutes 7 seconds?
  38. 38.⏱️ A video has three clips of 9, 52 and 32 seconds. How long is the video (in seconds)?
  39. 39.⏱️ Your video must be 180 seconds long. Your clips add up to 26 seconds. How many more seconds of video do you need?
  40. 40.⏱️ A video is 235 seconds long. How long is that in minutes and seconds? (a) 3 min 55 s (b) 2 min 35 s (c) 4 min 55 s (d) 3 min 25 s

Answer key

  1. 599
  2. 6
  3. 65
  4. 8
  5. 52
  6. 22
  7. 130
  8. 119
  9. 60
  10. 48
  11. 4 min 15 s
  12. 22
  13. 52
  14. 109
  15. 15
  16. 5 min 55 s
  17. 25
  18. 9
  19. 84
  20. 26
  21. 60
  22. 42
  23. 54
  24. 124
  25. 43
  26. 5
  27. 169
  28. 69
  29. 30
  30. the sum of the clips
  31. half as long
  32. 95
  33. 6 min 50 s
  34. 73
  35. 5 min 0 s
  36. 105
  37. 427
  38. 93
  39. 154
  40. 3 min 55 s

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