Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 273 · 40 questions

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.

1. 1.⏱️ A video has three clips of 38, 10 and 7 seconds. How long is the video (in seconds)?
2. 2.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
3. 3.⏱️ Your video must be 60 seconds long. Your clips add up to 55 seconds. How many more seconds of video do you need?
4. 4.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
5. 5.⏱️ A video is 135 seconds long. How long is that in minutes and seconds? (a) 2 min 15 s (b) 2 min 45 s (c) 3 min 15 s (d) 1 min 35 s
6. 6.⏱️ Your video must be 180 seconds long. Your clips add up to 123 seconds. How many more seconds of video do you need?
7. 7.⏱️ A video is 400 seconds long. How long is that in minutes and seconds? (a) 6 min 10 s (b) 4 min 0 s (c) 7 min 40 s (d) 6 min 40 s
8. 8.⏱️ A 16-second clip is sped up to 2× speed. How long does it last now (in seconds)?
9. 9.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) half as long (c) silent (d) twice as long
10. 10.⏱️ 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
11. 11.⏱️ A 23-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
12. 12.⏱️ How many seconds are in 1 minute? (a) 100 (b) 30 (c) 10 (d) 60
13. 13.⏱️ An 87-second clip is sped up to 3× speed. How long does it last now (in seconds)?
14. 14.⏱️ How many seconds is 5 minutes 13 seconds?
15. 15.⏱️ A video is 525 seconds long. How long is that in minutes and seconds? (a) 8 min 45 s (b) 8 min 15 s (c) 9 min 45 s (d) 5 min 25 s
16. 16.⏱️ Your video must be 180 seconds long. Your clips add up to 42 seconds. How many more seconds of video do you need?
17. 17.⏱️ A 32-second clip is sped up to 2× speed. How long does it last now (in seconds)?
18. 18.⏱️ Your video must be 60 seconds long. Your clips add up to 33 seconds. How many more seconds of video do you need?
19. 19.⏱️ A video has three clips of 25, 26 and 25 seconds. How long is the video (in seconds)?
20. 20.⏱️ How many seconds is 2 minutes 59 seconds?
21. 21.⏱️ A video has three clips of 59, 22 and 11 seconds. How long is the video (in seconds)?
22. 22.⏱️ A 34-second clip is sped up to 2× speed. How long does it last now (in seconds)?
23. 23.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
24. 24.⏱️ Your video must be 180 seconds long. Your clips add up to 41 seconds. How many more seconds of video do you need?
25. 25.⏱️ A 19-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
26. 26.⏱️ A video has three clips of 33, 20 and 25 seconds. How long is the video (in seconds)?
27. 27.⏱️ A video has three clips of 40, 13 and 28 seconds. How long is the video (in seconds)?
28. 28.⏱️ A video has three clips of 14, 10 and 11 seconds. How long is the video (in seconds)?
29. 29.⏱️ How many seconds is 8 minutes 55 seconds?
30. 30.⏱️ An 11-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 31 seconds. How many more seconds of video do you need?
32. 32.⏱️ How many seconds is 9 minutes 28 seconds?
33. 33.⏱️ Your video must be 90 seconds long. Your clips add up to 29 seconds. How many more seconds of video do you need?
34. 34.⏱️ A video has three clips of 51, 60 and 52 seconds. How long is the video (in seconds)?
35. 35.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
36. 36.⏱️ A video has three clips of 24, 29 and 11 seconds. How long is the video (in seconds)?
37. 37.⏱️ A video has three clips of 41, 59 and 37 seconds. How long is the video (in seconds)?
38. 38.⏱️ A video has three clips of 22, 49 and 57 seconds. How long is the video (in seconds)?
39. 39.⏱️ How many seconds is 7 minutes 59 seconds?
40. 40.⏱️ Your video must be 60 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?

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