Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 252 · 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.⏱️ Your video must be 120 seconds long. Your clips add up to 25 seconds. How many more seconds of video do you need?
2. 2.⏱️ A 42-second clip is sped up to 3× speed. How long does it last now (in seconds)?
3. 3.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
4. 4.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) twice as long (c) the same length (d) half as long
5. 5.⏱️ A 48-second clip is sped up to 3× speed. How long does it last now (in seconds)?
6. 6.⏱️ A video is 170 seconds long. How long is that in minutes and seconds? (a) 2 min 50 s (b) 2 min 20 s (c) 3 min 50 s (d) 1 min 70 s
7. 7.⏱️ How many seconds is 3 minutes 52 seconds?
8. 8.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
9. 9.⏱️ A 36-second clip is sped up to 2× speed. How long does it last now (in seconds)?
10. 10.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
11. 11.⏱️ A video has three clips of 54, 29 and 47 seconds. How long is the video (in seconds)?
12. 12.⏱️ A video is 480 seconds long. How long is that in minutes and seconds? (a) 4 min 80 s (b) 9 min 0 s (c) 8 min 30 s (d) 8 min 0 s
13. 13.⏱️ A 70-second clip is sped up to 2× speed. How long does it last now (in seconds)?
14. 14.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the sum of the clips (c) the longest clip (d) always 1 minute
15. 15.⏱️ How many seconds are in 1 minute? (a) 30 (b) 60 (c) 10 (d) 100
16. 16.⏱️ A video has three clips of 10, 56 and 26 seconds. How long is the video (in seconds)?
17. 17.⏱️ A 48-second clip is sped up to 4× speed. How long does it last now (in seconds)?
18. 18.⏱️ How many seconds is 1 minute 11 seconds?
19. 19.⏱️ A video has three clips of 37, 45 and 40 seconds. How long is the video (in seconds)?
20. 20.⏱️ Your video must be 60 seconds long. Your clips add up to 23 seconds. How many more seconds of video do you need?
21. 21.⏱️ A video has three clips of 8, 5 and 14 seconds. How long is the video (in seconds)?
22. 22.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
23. 23.⏱️ A video has three clips of 29, 51 and 59 seconds. How long is the video (in seconds)?
24. 24.⏱️ Your video must be 180 seconds long. Your clips add up to 164 seconds. How many more seconds of video do you need?
25. 25.⏱️ A video is 445 seconds long. How long is that in minutes and seconds? (a) 7 min 25 s (b) 7 min 55 s (c) 4 min 45 s (d) 8 min 25 s
26. 26.⏱️ Your video must be 180 seconds long. Your clips add up to 139 seconds. How many more seconds of video do you need?
27. 27.⏱️ A video is 370 seconds long. How long is that in minutes and seconds? (a) 6 min 10 s (b) 3 min 70 s (c) 6 min 40 s (d) 7 min 10 s
28. 28.⏱️ Your video must be 180 seconds long. Your clips add up to 158 seconds. How many more seconds of video do you need?
29. 29.⏱️ A 36-second clip is sped up to 4× speed. How long does it last now (in seconds)?
30. 30.⏱️ How many seconds is 9 minutes 4 seconds?
31. 31.⏱️ A video is 115 seconds long. How long is that in minutes and seconds? (a) 1 min 55 s (b) 2 min 55 s (c) 1 min 25 s (d) 1 min 15 s
32. 32.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
33. 33.⏱️ A video is 430 seconds long. How long is that in minutes and seconds? (a) 7 min 10 s (b) 4 min 30 s (c) 7 min 40 s (d) 8 min 10 s
34. 34.⏱️ How many seconds is 5 minutes 55 seconds?
35. 35.⏱️ Your video must be 60 seconds long. Your clips add up to 52 seconds. How many more seconds of video do you need?
36. 36.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
37. 37.⏱️ A video has three clips of 40, 50 and 8 seconds. How long is the video (in seconds)?
38. 38.⏱️ A 99-second clip is sped up to 3× speed. How long does it last now (in seconds)?
39. 39.⏱️ Your video must be 90 seconds long. Your clips add up to 63 seconds. How many more seconds of video do you need?
40. 40.⏱️ Your video must be 180 seconds long. Your clips add up to 33 seconds. How many more seconds of video do you need?

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