Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 178 · 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 27-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
2. 2.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) half as long (c) the same length (d) twice as long
3. 3.⏱️ A video has three clips of 55, 10 and 25 seconds. How long is the video (in seconds)?
4. 4.⏱️ A 66-second clip is sped up to 3× speed. How long does it last now (in seconds)?
5. 5.⏱️ A video has three clips of 39, 11 and 31 seconds. How long is the video (in seconds)?
6. 6.⏱️ A 30-second clip is sped up to 2× speed. How long does it last now (in seconds)?
7. 7.⏱️ An 18-second clip is sped up to 2× speed. How long does it last now (in seconds)?
8. 8.⏱️ A video is 125 seconds long. How long is that in minutes and seconds? (a) 2 min 35 s (b) 3 min 5 s (c) 1 min 25 s (d) 2 min 5 s
9. 9.⏱️ A 51-second clip is sped up to 3× speed. How long does it last now (in seconds)?
10. 10.⏱️ A 48-second clip is sped up to 3× speed. How long does it last now (in seconds)?
11. 11.⏱️ Your video must be 180 seconds long. Your clips add up to 17 seconds. How many more seconds of video do you need?
12. 12.⏱️ Your video must be 120 seconds long. Your clips add up to 90 seconds. How many more seconds of video do you need?
13. 13.⏱️ Your video must be 60 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?
14. 14.⏱️ A video is 230 seconds long. How long is that in minutes and seconds? (a) 3 min 50 s (b) 3 min 20 s (c) 2 min 30 s (d) 4 min 50 s
15. 15.⏱️ Your video must be 90 seconds long. Your clips add up to 75 seconds. How many more seconds of video do you need?
16. 16.⏱️ How many seconds are in 1 minute? (a) 60 (b) 10 (c) 100 (d) 30
17. 17.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
18. 18.⏱️ A video is 265 seconds long. How long is that in minutes and seconds? (a) 2 min 65 s (b) 5 min 25 s (c) 4 min 25 s (d) 4 min 55 s
19. 19.⏱️ Your video must be 120 seconds long. Your clips add up to 23 seconds. How many more seconds of video do you need?
20. 20.⏱️ A video has three clips of 7, 43 and 6 seconds. How long is the video (in seconds)?
21. 21.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
22. 22.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
23. 23.⏱️ A video is 335 seconds long. How long is that in minutes and seconds? (a) 3 min 35 s (b) 5 min 35 s (c) 6 min 35 s (d) 5 min 5 s
24. 24.⏱️ A 78-second clip is sped up to 2× speed. How long does it last now (in seconds)?
25. 25.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the longest clip (c) always 1 minute (d) the sum of the clips
26. 26.⏱️ A video has three clips of 49, 36 and 33 seconds. How long is the video (in seconds)?
27. 27.⏱️ A video has three clips of 46, 20 and 32 seconds. How long is the video (in seconds)?
28. 28.⏱️ How many seconds is 8 minutes 38 seconds?
29. 29.⏱️ A video is 555 seconds long. How long is that in minutes and seconds? (a) 9 min 15 s (b) 9 min 45 s (c) 5 min 55 s (d) 10 min 15 s
30. 30.⏱️ A video has three clips of 41, 57 and 52 seconds. How long is the video (in seconds)?
31. 31.⏱️ A video has three clips of 16, 47 and 15 seconds. How long is the video (in seconds)?
32. 32.⏱️ A 23-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
33. 33.⏱️ A 36-second clip is sped up to 4× speed. How long does it last now (in seconds)?
34. 34.⏱️ How many seconds is 4 minutes 29 seconds?
35. 35.⏱️ Your video must be 120 seconds long. Your clips add up to 17 seconds. How many more seconds of video do you need?
36. 36.⏱️ A 50-second clip is sped up to 2× speed. How long does it last now (in seconds)?
37. 37.⏱️ How many seconds is 6 minutes 43 seconds?
38. 38.⏱️ Your video must be 120 seconds long. Your clips add up to 19 seconds. How many more seconds of video do you need?
39. 39.⏱️ How many seconds is 5 minutes 35 seconds?
40. 40.⏱️ How many seconds is 4 minutes 31 seconds?

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