Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 270 · 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 26, 35 and 20 seconds. How long is the video (in seconds)?
2. 2.⏱️ An 11-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 30 seconds. How many more seconds of video do you need?
4. 4.⏱️ A video is 435 seconds long. How long is that in minutes and seconds? (a) 7 min 45 s (b) 7 min 15 s (c) 8 min 15 s (d) 4 min 35 s
5. 5.⏱️ How many seconds is 3 minutes 2 seconds?
6. 6.⏱️ How many seconds is 8 minutes 7 seconds?
7. 7.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) the shortest clip (c) the sum of the clips (d) always 1 minute
8. 8.⏱️ How many seconds is 7 minutes 42 seconds?
9. 9.⏱️ A video has three clips of 33, 41 and 40 seconds. How long is the video (in seconds)?
10. 10.⏱️ A 68-second clip is sped up to 2× speed. How long does it last now (in seconds)?
11. 11.⏱️ Speeding a clip up to 2× makes it … (a) twice as long (b) the same length (c) half as long (d) silent
12. 12.⏱️ A 14-second clip is sped up to 2× speed. How long does it last now (in seconds)?
13. 13.⏱️ Your video must be 60 seconds long. Your clips add up to 9 seconds. How many more seconds of video do you need?
14. 14.⏱️ A video has three clips of 36, 19 and 30 seconds. How long is the video (in seconds)?
15. 15.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
16. 16.⏱️ A video is 430 seconds long. How long is that in minutes and seconds? (a) 7 min 10 s (b) 8 min 10 s (c) 7 min 40 s (d) 4 min 30 s
17. 17.⏱️ Your video must be 180 seconds long. Your clips add up to 126 seconds. How many more seconds of video do you need?
18. 18.⏱️ How many seconds are in 1 minute? (a) 30 (b) 100 (c) 60 (d) 10
19. 19.⏱️ A video has three clips of 31, 60 and 59 seconds. How long is the video (in seconds)?
20. 20.⏱️ Your video must be 120 seconds long. Your clips add up to 44 seconds. How many more seconds of video do you need?
21. 21.⏱️ A video is 320 seconds long. How long is that in minutes and seconds? (a) 6 min 20 s (b) 5 min 50 s (c) 3 min 20 s (d) 5 min 20 s
22. 22.⏱️ A 42-second clip is sped up to 3× speed. How long does it last now (in seconds)?
23. 23.⏱️ How many seconds is 2 minutes 57 seconds?
24. 24.⏱️ A 10-second clip is sped up to 2× speed. How long does it last now (in seconds)?
25. 25.⏱️ An 8-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
26. 26.⏱️ A video is 155 seconds long. How long is that in minutes and seconds? (a) 2 min 35 s (b) 2 min 5 s (c) 1 min 55 s (d) 3 min 35 s
27. 27.⏱️ Your video must be 60 seconds long. Your clips add up to 19 seconds. How many more seconds of video do you need?
28. 28.⏱️ A video is 485 seconds long. How long is that in minutes and seconds? (a) 8 min 5 s (b) 9 min 5 s (c) 8 min 35 s (d) 4 min 85 s
29. 29.⏱️ A 51-second clip is sped up to 3× speed. How long does it last now (in seconds)?
30. 30.⏱️ A video has three clips of 39, 6 and 51 seconds. How long is the video (in seconds)?
31. 31.⏱️ A video is 275 seconds long. How long is that in minutes and seconds? (a) 4 min 35 s (b) 4 min 5 s (c) 2 min 75 s (d) 5 min 35 s
32. 32.⏱️ Your video must be 60 seconds long. Your clips add up to 15 seconds. How many more seconds of video do you need?
33. 33.⏱️ A 160-second clip is sped up to 4× speed. How long does it last now (in seconds)?
34. 34.⏱️ A video has three clips of 12, 31 and 27 seconds. How long is the video (in seconds)?
35. 35.⏱️ Your video must be 90 seconds long. Your clips add up to 69 seconds. How many more seconds of video do you need?
36. 36.⏱️ How many seconds is 7 minutes 59 seconds?
37. 37.⏱️ An 80-second clip is sped up to 4× speed. How long does it last now (in seconds)?
38. 38.⏱️ Your video must be 90 seconds long. Your clips add up to 36 seconds. How many more seconds of video do you need?
39. 39.⏱️ A video is 585 seconds long. How long is that in minutes and seconds? (a) 9 min 15 s (b) 10 min 45 s (c) 9 min 45 s (d) 5 min 85 s
40. 40.⏱️ How many seconds is 2 minutes 30 seconds?

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