Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 64 · 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.⏱️ How many seconds are in 1 minute? (a) 30 (b) 100 (c) 10 (d) 60
2. 2.⏱️ A 48-second clip is sped up to 3× speed. How long does it last now (in seconds)?
3. 3.⏱️ How many seconds is 4 minutes 11 seconds?
4. 4.⏱️ An 11-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
5. 5.⏱️ Your video must be 90 seconds long. Your clips add up to 31 seconds. How many more seconds of video do you need?
6. 6.⏱️ How many seconds is 9 minutes 5 seconds?
7. 7.⏱️ A video has three clips of 49, 18 and 20 seconds. How long is the video (in seconds)?
8. 8.⏱️ How many seconds is 5 minutes 52 seconds?
9. 9.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
10. 10.⏱️ 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
11. 11.⏱️ A 54-second clip is sped up to 2× speed. How long does it last now (in seconds)?
12. 12.⏱️ A video has three clips of 23, 13 and 8 seconds. How long is the video (in seconds)?
13. 13.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
14. 14.⏱️ A video is 350 seconds long. How long is that in minutes and seconds? (a) 6 min 50 s (b) 5 min 20 s (c) 3 min 50 s (d) 5 min 50 s
15. 15.⏱️ Your video must be 90 seconds long. Your clips add up to 74 seconds. How many more seconds of video do you need?
16. 16.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
17. 17.⏱️ A video is 150 seconds long. How long is that in minutes and seconds? (a) 3 min 30 s (b) 1 min 50 s (c) 2 min 0 s (d) 2 min 30 s
18. 18.⏱️ Your video must be 90 seconds long. Your clips add up to 51 seconds. How many more seconds of video do you need?
19. 19.⏱️ Your video must be 120 seconds long. Your clips add up to 21 seconds. How many more seconds of video do you need?
20. 20.⏱️ A 22-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
21. 21.⏱️ A 26-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
22. 22.⏱️ A video has three clips of 31, 58 and 50 seconds. How long is the video (in seconds)?
23. 23.⏱️ Your video must be 120 seconds long. Your clips add up to 93 seconds. How many more seconds of video do you need?
24. 24.⏱️ A 108-second clip is sped up to 4× speed. How long does it last now (in seconds)?
25. 25.⏱️ A video has three clips of 23, 26 and 22 seconds. How long is the video (in seconds)?
26. 26.⏱️ A video is 90 seconds long. How long is that in minutes and seconds? (a) 2 min 30 s (b) 3 min 30 s (c) 1 min 30 s (d) 1 min 0 s
27. 27.⏱️ A video has three clips of 60, 57 and 11 seconds. How long is the video (in seconds)?
28. 28.⏱️ How many seconds is 3 minutes 41 seconds?
29. 29.⏱️ A video is 580 seconds long. How long is that in minutes and seconds? (a) 9 min 40 s (b) 5 min 80 s (c) 9 min 10 s (d) 10 min 40 s
30. 30.⏱️ A video is 95 seconds long. How long is that in minutes and seconds? (a) 3 min 35 s (b) 2 min 35 s (c) 1 min 35 s (d) 1 min 5 s
31. 31.⏱️ A 144-second clip is sped up to 4× speed. How long does it last now (in seconds)?
32. 32.⏱️ A video has three clips of 23, 15 and 42 seconds. How long is the video (in seconds)?
33. 33.⏱️ A video has three clips of 20, 9 and 52 seconds. How long is the video (in seconds)?
34. 34.⏱️ A video has three clips of 48, 12 and 28 seconds. How long is the video (in seconds)?
35. 35.⏱️ A video has three clips of 39, 51 and 41 seconds. How long is the video (in seconds)?
36. 36.⏱️ A video is 575 seconds long. How long is that in minutes and seconds? (a) 9 min 5 s (b) 9 min 35 s (c) 10 min 35 s (d) 5 min 75 s
37. 37.⏱️ Your video must be 120 seconds long. Your clips add up to 83 seconds. How many more seconds of video do you need?
38. 38.⏱️ Your video must be 180 seconds long. Your clips add up to 26 seconds. How many more seconds of video do you need?
39. 39.⏱️ 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
40. 40.⏱️ A 32-second clip is sped up to 2× speed. How long does it last now (in seconds)?

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