Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 23 · 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.⏱️ How many seconds is 8 minutes 48 seconds?
2. 2.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
3. 3.⏱️ How many seconds is 4 minutes 35 seconds?
4. 4.⏱️ A 23-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
5. 5.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) the longest clip (c) the shortest clip (d) always 1 minute
6. 6.⏱️ A 22-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
7. 7.⏱️ Your video must be 60 seconds long. Your clips add up to 44 seconds. How many more seconds of video do you need?
8. 8.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
9. 9.⏱️ Your video must be 60 seconds long. Your clips add up to 14 seconds. How many more seconds of video do you need?
10. 10.⏱️ A 38-second clip is sped up to 2× speed. How long does it last now (in seconds)?
11. 11.⏱️ A video is 585 seconds long. How long is that in minutes and seconds? (a) 5 min 85 s (b) 9 min 45 s (c) 9 min 15 s (d) 10 min 45 s
12. 12.⏱️ A video is 535 seconds long. How long is that in minutes and seconds? (a) 5 min 35 s (b) 9 min 55 s (c) 8 min 25 s (d) 8 min 55 s
13. 13.⏱️ How many seconds is 8 minutes 38 seconds?
14. 14.⏱️ A video has three clips of 17, 46 and 15 seconds. How long is the video (in seconds)?
15. 15.⏱️ A video has three clips of 47, 37 and 47 seconds. How long is the video (in seconds)?
16. 16.⏱️ How many seconds are in 1 minute? (a) 100 (b) 30 (c) 10 (d) 60
17. 17.⏱️ An 18-second clip is sped up to 2× speed. How long does it last now (in seconds)?
18. 18.⏱️ Your video must be 90 seconds long. Your clips add up to 9 seconds. How many more seconds of video do you need?
19. 19.⏱️ A video has three clips of 20, 36 and 25 seconds. How long is the video (in seconds)?
20. 20.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
21. 21.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
22. 22.⏱️ A 50-second clip is sped up to 2× speed. How long does it last now (in seconds)?
23. 23.⏱️ Your video must be 60 seconds long. Your clips add up to 12 seconds. How many more seconds of video do you need?
24. 24.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) twice as long (c) the same length (d) half as long
25. 25.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
26. 26.⏱️ A video is 60 seconds long. How long is that in minutes and seconds? (a) 3 min 0 s (b) 1 min 30 s (c) 2 min 0 s (d) 1 min 0 s
27. 27.⏱️ A video has three clips of 16, 59 and 18 seconds. How long is the video (in seconds)?
28. 28.⏱️ How many seconds is 8 minutes 17 seconds?
29. 29.⏱️ A 104-second clip is sped up to 4× speed. How long does it last now (in seconds)?
30. 30.⏱️ Your video must be 180 seconds long. Your clips add up to 92 seconds. How many more seconds of video do you need?
31. 31.⏱️ A 27-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
32. 32.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
33. 33.⏱️ Your video must be 120 seconds long. Your clips add up to 64 seconds. How many more seconds of video do you need?
34. 34.⏱️ A video is 165 seconds long. How long is that in minutes and seconds? (a) 2 min 45 s (b) 3 min 45 s (c) 1 min 65 s (d) 2 min 15 s
35. 35.⏱️ How many seconds is 9 minutes 38 seconds?
36. 36.⏱️ How many seconds is 3 minutes 13 seconds?
37. 37.⏱️ How many seconds is 7 minutes 21 seconds?
38. 38.⏱️ Your video must be 90 seconds long. Your clips add up to 28 seconds. How many more seconds of video do you need?
39. 39.⏱️ Your video must be 120 seconds long. Your clips add up to 105 seconds. How many more seconds of video do you need?
40. 40.⏱️ How many seconds is 3 minutes 52 seconds?

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