Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 8 · 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 26-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
2. 2.⏱️ How many seconds are in 1 minute? (a) 10 (b) 30 (c) 100 (d) 60
3. 3.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) twice as long (c) the same length (d) half as long
4. 4.⏱️ Your video must be 60 seconds long. Your clips add up to 29 seconds. How many more seconds of video do you need?
5. 5.⏱️ A video has three clips of 60, 23 and 39 seconds. How long is the video (in seconds)?
6. 6.⏱️ A video is 480 seconds long. How long is that in minutes and seconds? (a) 8 min 30 s (b) 9 min 0 s (c) 4 min 80 s (d) 8 min 0 s
7. 7.⏱️ How many seconds is 9 minutes 31 seconds?
8. 8.⏱️ A video has three clips of 32, 39 and 21 seconds. How long is the video (in seconds)?
9. 9.⏱️ How many seconds is 1 minute 48 seconds?
10. 10.⏱️ A video has three clips of 46, 16 and 51 seconds. How long is the video (in seconds)?
11. 11.⏱️ How many seconds is 8 minutes 31 seconds?
12. 12.⏱️ A video has three clips of 34, 51 and 36 seconds. How long is the video (in seconds)?
13. 13.⏱️ An 80-second clip is sped up to 2× speed. How long does it last now (in seconds)?
14. 14.⏱️ A video is 290 seconds long. How long is that in minutes and seconds? (a) 4 min 50 s (b) 2 min 90 s (c) 4 min 20 s (d) 5 min 50 s
15. 15.⏱️ Your video must be 120 seconds long. Your clips add up to 80 seconds. How many more seconds of video do you need?
16. 16.⏱️ A video is 230 seconds long. How long is that in minutes and seconds? (a) 4 min 50 s (b) 2 min 30 s (c) 3 min 20 s (d) 3 min 50 s
17. 17.⏱️ A video is 210 seconds long. How long is that in minutes and seconds? (a) 3 min 0 s (b) 2 min 10 s (c) 4 min 30 s (d) 3 min 30 s
18. 18.⏱️ A 76-second clip is sped up to 2× speed. How long does it last now (in seconds)?
19. 19.⏱️ Your video must be 120 seconds long. Your clips add up to 33 seconds. How many more seconds of video do you need?
20. 20.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
21. 21.⏱️ An 84-second clip is sped up to 3× speed. How long does it last now (in seconds)?
22. 22.⏱️ Your video must be 180 seconds long. Your clips add up to 26 seconds. How many more seconds of video do you need?
23. 23.⏱️ A video is 580 seconds long. How long is that in minutes and seconds? (a) 9 min 40 s (b) 10 min 40 s (c) 9 min 10 s (d) 5 min 80 s
24. 24.⏱️ A 20-second clip is sped up to 2× speed. How long does it last now (in seconds)?
25. 25.⏱️ Your video must be 180 seconds long. Your clips add up to 63 seconds. How many more seconds of video do you need?
26. 26.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
27. 27.⏱️ Your video must be 120 seconds long. Your clips add up to 85 seconds. How many more seconds of video do you need?
28. 28.⏱️ A 96-second clip is sped up to 3× speed. How long does it last now (in seconds)?
29. 29.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the longest clip (c) the sum of the clips (d) always 1 minute
30. 30.⏱️ Your video must be 90 seconds long. Your clips add up to 81 seconds. How many more seconds of video do you need?
31. 31.⏱️ A video has three clips of 18, 41 and 29 seconds. How long is the video (in seconds)?
32. 32.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
33. 33.⏱️ How many seconds is 1 minute 33 seconds?
34. 34.⏱️ A 57-second clip is sped up to 3× speed. How long does it last now (in seconds)?
35. 35.⏱️ A video is 455 seconds long. How long is that in minutes and seconds? (a) 7 min 5 s (b) 7 min 35 s (c) 8 min 35 s (d) 4 min 55 s
36. 36.⏱️ A video is 500 seconds long. How long is that in minutes and seconds? (a) 8 min 50 s (b) 9 min 20 s (c) 5 min 0 s (d) 8 min 20 s
37. 37.⏱️ Your video must be 180 seconds long. Your clips add up to 11 seconds. How many more seconds of video do you need?
38. 38.⏱️ A 19-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
39. 39.⏱️ How many seconds is 5 minutes 9 seconds?
40. 40.⏱️ A video is 350 seconds long. How long is that in minutes and seconds? (a) 6 min 50 s (b) 3 min 50 s (c) 5 min 20 s (d) 5 min 50 s

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