Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 69 · 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) 100 (b) 60 (c) 10 (d) 30
2. 2.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) always 1 minute (c) the shortest clip (d) the sum of the clips
3. 3.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
4. 4.⏱️ A 28-second clip is sped up to 2× speed. How long does it last now (in seconds)?
5. 5.⏱️ A video is 525 seconds long. How long is that in minutes and seconds? (a) 5 min 25 s (b) 9 min 45 s (c) 8 min 15 s (d) 8 min 45 s
6. 6.⏱️ Your video must be 120 seconds long. Your clips add up to 11 seconds. How many more seconds of video do you need?
7. 7.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) half as long (c) twice as long (d) the same length
8. 8.⏱️ A video has three clips of 50, 11 and 14 seconds. How long is the video (in seconds)?
9. 9.⏱️ A 44-second clip is sped up to 2× speed. How long does it last now (in seconds)?
10. 10.⏱️ Your video must be 180 seconds long. Your clips add up to 89 seconds. How many more seconds of video do you need?
11. 11.⏱️ How many seconds is 8 minutes 59 seconds?
12. 12.⏱️ A 26-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
13. 13.⏱️ A video is 450 seconds long. How long is that in minutes and seconds? (a) 8 min 30 s (b) 4 min 50 s (c) 7 min 0 s (d) 7 min 30 s
14. 14.⏱️ A 144-second clip is sped up to 4× speed. How long does it last now (in seconds)?
15. 15.⏱️ How many seconds is 7 minutes 30 seconds?
16. 16.⏱️ A video is 460 seconds long. How long is that in minutes and seconds? (a) 4 min 60 s (b) 8 min 40 s (c) 7 min 10 s (d) 7 min 40 s
17. 17.⏱️ Your video must be 60 seconds long. Your clips add up to 53 seconds. How many more seconds of video do you need?
18. 18.⏱️ Your video must be 90 seconds long. Your clips add up to 54 seconds. How many more seconds of video do you need?
19. 19.⏱️ A video is 255 seconds long. How long is that in minutes and seconds? (a) 4 min 45 s (b) 2 min 55 s (c) 4 min 15 s (d) 5 min 15 s
20. 20.⏱️ How many seconds is 3 minutes 53 seconds?
21. 21.⏱️ A video has three clips of 29, 20 and 34 seconds. How long is the video (in seconds)?
22. 22.⏱️ A video has three clips of 18, 48 and 6 seconds. How long is the video (in seconds)?
23. 23.⏱️ A video is 330 seconds long. How long is that in minutes and seconds? (a) 5 min 0 s (b) 3 min 30 s (c) 5 min 30 s (d) 6 min 30 s
24. 24.⏱️ A 27-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
25. 25.⏱️ A video has three clips of 54, 20 and 50 seconds. How long is the video (in seconds)?
26. 26.⏱️ A video has three clips of 8, 40 and 50 seconds. How long is the video (in seconds)?
27. 27.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
28. 28.⏱️ A video has three clips of 56, 27 and 37 seconds. How long is the video (in seconds)?
29. 29.⏱️ How many seconds is 2 minutes 40 seconds?
30. 30.⏱️ A video is 355 seconds long. How long is that in minutes and seconds? (a) 3 min 55 s (b) 5 min 55 s (c) 5 min 25 s (d) 6 min 55 s
31. 31.⏱️ A video has three clips of 41, 44 and 8 seconds. How long is the video (in seconds)?
32. 32.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
33. 33.⏱️ A 152-second clip is sped up to 4× speed. How long does it last now (in seconds)?
34. 34.⏱️ A video is 495 seconds long. How long is that in minutes and seconds? (a) 4 min 95 s (b) 9 min 15 s (c) 8 min 15 s (d) 8 min 45 s
35. 35.⏱️ A video is 65 seconds long. How long is that in minutes and seconds? (a) 1 min 35 s (b) 1 min 5 s (c) 2 min 5 s (d) 3 min 5 s
36. 36.⏱️ A 22-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 18, 56 and 48 seconds. How long is the video (in seconds)?
38. 38.⏱️ A video has three clips of 28, 32 and 38 seconds. How long is the video (in seconds)?
39. 39.⏱️ A video has three clips of 9, 52 and 23 seconds. How long is the video (in seconds)?
40. 40.⏱️ A video has three clips of 42, 47 and 17 seconds. How long is the video (in seconds)?

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