Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 284 · 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 5, 54 and 6 seconds. How long is the video (in seconds)?
2. 2.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) half as long (c) twice as long (d) silent
3. 3.⏱️ How many seconds is 4 minutes 5 seconds?
4. 4.⏱️ A video has three clips of 16, 56 and 30 seconds. How long is the video (in seconds)?
5. 5.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
6. 6.⏱️ Your video must be 180 seconds long. Your clips add up to 18 seconds. How many more seconds of video do you need?
7. 7.⏱️ A video is 190 seconds long. How long is that in minutes and seconds? (a) 3 min 10 s (b) 3 min 40 s (c) 4 min 10 s (d) 1 min 90 s
8. 8.⏱️ A video is 170 seconds long. How long is that in minutes and seconds? (a) 2 min 20 s (b) 2 min 50 s (c) 1 min 70 s (d) 3 min 50 s
9. 9.⏱️ A 99-second clip is sped up to 3× speed. How long does it last now (in seconds)?
10. 10.⏱️ A 10-second clip is sped up to 2× speed. How long does it last now (in seconds)?
11. 11.⏱️ An 18-second clip is sped up to 2× speed. How long does it last now (in seconds)?
12. 12.⏱️ How many seconds is 5 minutes 26 seconds?
13. 13.⏱️ A video has three clips of 31, 12 and 28 seconds. How long is the video (in seconds)?
14. 14.⏱️ A video is 330 seconds long. How long is that in minutes and seconds? (a) 5 min 30 s (b) 3 min 30 s (c) 5 min 0 s (d) 6 min 30 s
15. 15.⏱️ A 120-second clip is sped up to 3× speed. How long does it last now (in seconds)?
16. 16.⏱️ Your video must be 60 seconds long. Your clips add up to 8 seconds. How many more seconds of video do you need?
17. 17.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
18. 18.⏱️ A 76-second clip is sped up to 4× speed. How long does it last now (in seconds)?
19. 19.⏱️ How many seconds are in 1 minute? (a) 60 (b) 30 (c) 10 (d) 100
20. 20.⏱️ A video has three clips of 8, 53 and 51 seconds. How long is the video (in seconds)?
21. 21.⏱️ A video has three clips of 7, 14 and 57 seconds. How long is the video (in seconds)?
22. 22.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) always 1 minute (c) the sum of the clips (d) the longest clip
23. 23.⏱️ A 40-second clip is sped up to 4× speed. How long does it last now (in seconds)?
24. 24.⏱️ How many seconds is 7 minutes 23 seconds?
25. 25.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
26. 26.⏱️ How many seconds is 4 minutes 11 seconds?
27. 27.⏱️ A 78-second clip is sped up to 3× speed. How long does it last now (in seconds)?
28. 28.⏱️ A video is 150 seconds long. How long is that in minutes and seconds? (a) 1 min 50 s (b) 3 min 30 s (c) 2 min 30 s (d) 2 min 0 s
29. 29.⏱️ A 16-second clip is sped up to 2× speed. How long does it last now (in seconds)?
30. 30.⏱️ A video is 540 seconds long. How long is that in minutes and seconds? (a) 10 min 0 s (b) 9 min 30 s (c) 9 min 0 s (d) 5 min 40 s
31. 31.⏱️ Your video must be 90 seconds long. Your clips add up to 56 seconds. How many more seconds of video do you need?
32. 32.⏱️ How many seconds is 2 minutes 22 seconds?
33. 33.⏱️ A video has three clips of 20, 6 and 23 seconds. How long is the video (in seconds)?
34. 34.⏱️ Your video must be 120 seconds long. Your clips add up to 104 seconds. How many more seconds of video do you need?
35. 35.⏱️ A video is 155 seconds long. How long is that in minutes and seconds? (a) 3 min 35 s (b) 1 min 55 s (c) 2 min 35 s (d) 2 min 5 s
36. 36.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
37. 37.⏱️ A video is 480 seconds long. How long is that in minutes and seconds? (a) 9 min 0 s (b) 4 min 80 s (c) 8 min 30 s (d) 8 min 0 s
38. 38.⏱️ Your video must be 60 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
39. 39.⏱️ Your video must be 60 seconds long. Your clips add up to 51 seconds. How many more seconds of video do you need?
40. 40.⏱️ How many seconds is 3 minutes 54 seconds?

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