Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 137 · 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 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
2. 2.⏱️ A video has three clips of 49, 56 and 26 seconds. How long is the video (in seconds)?
3. 3.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) the same length (c) twice as long (d) half as long
4. 4.⏱️ A video has three clips of 50, 7 and 19 seconds. How long is the video (in seconds)?
5. 5.⏱️ A video has three clips of 33, 42 and 22 seconds. How long is the video (in seconds)?
6. 6.⏱️ A video is 275 seconds long. How long is that in minutes and seconds? (a) 4 min 5 s (b) 5 min 35 s (c) 4 min 35 s (d) 2 min 75 s
7. 7.⏱️ A video is 225 seconds long. How long is that in minutes and seconds? (a) 2 min 25 s (b) 3 min 45 s (c) 4 min 45 s (d) 3 min 15 s
8. 8.⏱️ A video has three clips of 27, 15 and 26 seconds. How long is the video (in seconds)?
9. 9.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
10. 10.⏱️ A video is 425 seconds long. How long is that in minutes and seconds? (a) 7 min 5 s (b) 7 min 35 s (c) 8 min 5 s (d) 4 min 25 s
11. 11.⏱️ A video is 100 seconds long. How long is that in minutes and seconds? (a) 1 min 0 s (b) 2 min 40 s (c) 1 min 10 s (d) 1 min 40 s
12. 12.⏱️ Your video must be 60 seconds long. Your clips add up to 52 seconds. How many more seconds of video do you need?
13. 13.⏱️ An 18-second clip is sped up to 2× speed. How long does it last now (in seconds)?
14. 14.⏱️ A video is 185 seconds long. How long is that in minutes and seconds? (a) 1 min 85 s (b) 4 min 5 s (c) 3 min 35 s (d) 3 min 5 s
15. 15.⏱️ How many seconds are in 1 minute? (a) 10 (b) 30 (c) 60 (d) 100
16. 16.⏱️ An 84-second clip is sped up to 4× speed. How long does it last now (in seconds)?
17. 17.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the longest clip (c) always 1 minute (d) the sum of the clips
18. 18.⏱️ A 120-second clip is sped up to 4× speed. How long does it last now (in seconds)?
19. 19.⏱️ A 140-second clip is sped up to 4× speed. How long does it last now (in seconds)?
20. 20.⏱️ Your video must be 180 seconds long. Your clips add up to 79 seconds. How many more seconds of video do you need?
21. 21.⏱️ A 42-second clip is sped up to 3× speed. How long does it last now (in seconds)?
22. 22.⏱️ Your video must be 60 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
23. 23.⏱️ How many seconds is 2 minutes 49 seconds?
24. 24.⏱️ An 8-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
25. 25.⏱️ A 75-second clip is sped up to 3× speed. How long does it last now (in seconds)?
26. 26.⏱️ A video has three clips of 18, 22 and 32 seconds. How long is the video (in seconds)?
27. 27.⏱️ Your video must be 90 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
28. 28.⏱️ Your video must be 60 seconds long. Your clips add up to 8 seconds. How many more seconds of video do you need?
29. 29.⏱️ A 39-second clip is sped up to 3× speed. How long does it last now (in seconds)?
30. 30.⏱️ A 22-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
31. 31.⏱️ Your video must be 60 seconds long. Your clips add up to 21 seconds. How many more seconds of video do you need?
32. 32.⏱️ How many seconds is 1 minute 36 seconds?
33. 33.⏱️ Your video must be 60 seconds long. Your clips add up to 18 seconds. How many more seconds of video do you need?
34. 34.⏱️ A 148-second clip is sped up to 4× speed. How long does it last now (in seconds)?
35. 35.⏱️ A 45-second clip is sped up to 3× speed. How long does it last now (in seconds)?
36. 36.⏱️ How many seconds is 7 minutes 43 seconds?
37. 37.⏱️ How many seconds is 6 minutes 53 seconds?
38. 38.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
39. 39.⏱️ A video has three clips of 8, 29 and 50 seconds. How long is the video (in seconds)?
40. 40.⏱️ A video has three clips of 16, 14 and 40 seconds. How long is the video (in seconds)?

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