Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 65 · 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 9, 53 and 19 seconds. How long is the video (in seconds)?
2. 2.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
3. 3.⏱️ A video is 165 seconds long. How long is that in minutes and seconds? (a) 1 min 65 s (b) 3 min 45 s (c) 2 min 15 s (d) 2 min 45 s
4. 4.⏱️ A 60-second clip is sped up to 2× speed. How long does it last now (in seconds)?
5. 5.⏱️ A video has three clips of 15, 53 and 46 seconds. How long is the video (in seconds)?
6. 6.⏱️ A 64-second clip is sped up to 4× speed. How long does it last now (in seconds)?
7. 7.⏱️ Your video must be 120 seconds long. Your clips add up to 88 seconds. How many more seconds of video do you need?
8. 8.⏱️ A video has three clips of 21, 7 and 7 seconds. How long is the video (in seconds)?
9. 9.⏱️ A video has three clips of 49, 40 and 47 seconds. How long is the video (in seconds)?
10. 10.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) the same length (c) twice as long (d) half as long
11. 11.⏱️ How many seconds are in 1 minute? (a) 100 (b) 30 (c) 60 (d) 10
12. 12.⏱️ A video is 250 seconds long. How long is that in minutes and seconds? (a) 5 min 10 s (b) 4 min 10 s (c) 4 min 40 s (d) 2 min 50 s
13. 13.⏱️ A 56-second clip is sped up to 4× speed. How long does it last now (in seconds)?
14. 14.⏱️ 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
15. 15.⏱️ A 28-second clip is sped up to 2× speed. How long does it last now (in seconds)?
16. 16.⏱️ A video has three clips of 60, 52 and 44 seconds. How long is the video (in seconds)?
17. 17.⏱️ A 30-second clip is sped up to 2× speed. How long does it last now (in seconds)?
18. 18.⏱️ A video has three clips of 20, 12 and 14 seconds. How long is the video (in seconds)?
19. 19.⏱️ A video has three clips of 17, 45 and 6 seconds. How long is the video (in seconds)?
20. 20.⏱️ Your video must be 120 seconds long. Your clips add up to 113 seconds. How many more seconds of video do you need?
21. 21.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
22. 22.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
23. 23.⏱️ A 148-second clip is sped up to 4× speed. How long does it last now (in seconds)?
24. 24.⏱️ Your video must be 180 seconds long. Your clips add up to 59 seconds. How many more seconds of video do you need?
25. 25.⏱️ How many seconds is 4 minutes 7 seconds?
26. 26.⏱️ Your video must be 60 seconds long. Your clips add up to 46 seconds. How many more seconds of video do you need?
27. 27.⏱️ A video has three clips of 12, 12 and 54 seconds. How long is the video (in seconds)?
28. 28.⏱️ A 32-second clip is sped up to 4× speed. How long does it last now (in seconds)?
29. 29.⏱️ How many seconds is 6 minutes 15 seconds?
30. 30.⏱️ A video is 60 seconds long. How long is that in minutes and seconds? (a) 1 min 0 s (b) 1 min 30 s (c) 2 min 0 s (d) 3 min 0 s
31. 31.⏱️ Your video must be 90 seconds long. Your clips add up to 80 seconds. How many more seconds of video do you need?
32. 32.⏱️ A video is 505 seconds long. How long is that in minutes and seconds? (a) 8 min 25 s (b) 8 min 55 s (c) 5 min 5 s (d) 9 min 25 s
33. 33.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
34. 34.⏱️ How many seconds is 5 minutes 21 seconds?
35. 35.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
36. 36.⏱️ How many seconds is 8 minutes 3 seconds?
37. 37.⏱️ Your video must be 90 seconds long. Your clips add up to 17 seconds. How many more seconds of video do you need?
38. 38.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
39. 39.⏱️ A video has three clips of 44, 17 and 13 seconds. How long is the video (in seconds)?
40. 40.⏱️ Your video must be 120 seconds long. Your clips add up to 75 seconds. How many more seconds of video do you need?

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