Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 20 · 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 12-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) twice as long (b) half as long (c) the same length (d) silent
3. 3.⏱️ Your video must be 60 seconds long. Your clips add up to 17 seconds. How many more seconds of video do you need?
4. 4.⏱️ A video has three clips of 18, 21 and 33 seconds. How long is the video (in seconds)?
5. 5.⏱️ How many seconds is 8 minutes 35 seconds?
6. 6.⏱️ A video is 315 seconds long. How long is that in minutes and seconds? (a) 5 min 45 s (b) 5 min 15 s (c) 3 min 15 s (d) 6 min 15 s
7. 7.⏱️ A video has three clips of 14, 55 and 10 seconds. How long is the video (in seconds)?
8. 8.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
9. 9.⏱️ How many seconds are in 1 minute? (a) 100 (b) 10 (c) 60 (d) 30
10. 10.⏱️ How many seconds is 8 minutes 11 seconds?
11. 11.⏱️ Your video must be 60 seconds long. Your clips add up to 18 seconds. How many more seconds of video do you need?
12. 12.⏱️ Your video must be 60 seconds long. Your clips add up to 31 seconds. How many more seconds of video do you need?
13. 13.⏱️ Your video must be 180 seconds long. Your clips add up to 120 seconds. How many more seconds of video do you need?
14. 14.⏱️ A 26-second clip is sped up to 2× speed. How long does it last now (in seconds)?
15. 15.⏱️ How many seconds is 2 minutes 45 seconds?
16. 16.⏱️ A 116-second clip is sped up to 4× speed. How long does it last now (in seconds)?
17. 17.⏱️ A video has three clips of 43, 11 and 42 seconds. How long is the video (in seconds)?
18. 18.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) always 1 minute (c) the shortest clip (d) the longest clip
19. 19.⏱️ A 60-second clip is sped up to 4× speed. How long does it last now (in seconds)?
20. 20.⏱️ A video is 245 seconds long. How long is that in minutes and seconds? (a) 5 min 5 s (b) 4 min 35 s (c) 2 min 45 s (d) 4 min 5 s
21. 21.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
22. 22.⏱️ How many seconds is 4 minutes 9 seconds?
23. 23.⏱️ Your video must be 60 seconds long. Your clips add up to 44 seconds. How many more seconds of video do you need?
24. 24.⏱️ How many seconds is 5 minutes 6 seconds?
25. 25.⏱️ A 48-second clip is sped up to 3× speed. How long does it last now (in seconds)?
26. 26.⏱️ A video has three clips of 48, 13 and 23 seconds. How long is the video (in seconds)?
27. 27.⏱️ A 112-second clip is sped up to 4× speed. How long does it last now (in seconds)?
28. 28.⏱️ A 63-second clip is sped up to 3× speed. How long does it last now (in seconds)?
29. 29.⏱️ A video has three clips of 19, 23 and 19 seconds. How long is the video (in seconds)?
30. 30.⏱️ A video is 400 seconds long. How long is that in minutes and seconds? (a) 7 min 40 s (b) 6 min 10 s (c) 6 min 40 s (d) 4 min 0 s
31. 31.⏱️ Your video must be 120 seconds long. Your clips add up to 12 seconds. How many more seconds of video do you need?
32. 32.⏱️ A video is 540 seconds long. How long is that in minutes and seconds? (a) 9 min 30 s (b) 5 min 40 s (c) 10 min 0 s (d) 9 min 0 s
33. 33.⏱️ How many seconds is 7 minutes 1 second?
34. 34.⏱️ A video has three clips of 39, 56 and 52 seconds. How long is the video (in seconds)?
35. 35.⏱️ Your video must be 90 seconds long. Your clips add up to 38 seconds. How many more seconds of video do you need?
36. 36.⏱️ A 72-second clip is sped up to 2× speed. How long does it last now (in seconds)?
37. 37.⏱️ How many seconds is 1 minute 9 seconds?
38. 38.⏱️ How many seconds is 1 minute 23 seconds?
39. 39.⏱️ Your video must be 120 seconds long. Your clips add up to 107 seconds. How many more seconds of video do you need?
40. 40.⏱️ How many seconds is 7 minutes 53 seconds?

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