Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 162 · 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 36-second clip is sped up to 3× speed. How long does it last now (in seconds)?
2. 2.⏱️ A video has three clips of 57, 60 and 20 seconds. How long is the video (in seconds)?
3. 3.⏱️ How many seconds is 3 minutes 9 seconds?
4. 4.⏱️ How many seconds are in 1 minute? (a) 60 (b) 100 (c) 30 (d) 10
5. 5.⏱️ A 3-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
6. 6.⏱️ Your video must be 90 seconds long. Your clips add up to 14 seconds. How many more seconds of video do you need?
7. 7.⏱️ A 105-second clip is sped up to 3× speed. How long does it last now (in seconds)?
8. 8.⏱️ How many seconds is 3 minutes 8 seconds?
9. 9.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
10. 10.⏱️ Your video must be 180 seconds long. Your clips add up to 74 seconds. How many more seconds of video do you need?
11. 11.⏱️ A video is 75 seconds long. How long is that in minutes and seconds? (a) 1 min 45 s (b) 2 min 15 s (c) 1 min 15 s (d) 3 min 15 s
12. 12.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) twice as long (c) half as long (d) the same length
13. 13.⏱️ A video is 490 seconds long. How long is that in minutes and seconds? (a) 8 min 40 s (b) 8 min 10 s (c) 4 min 90 s (d) 9 min 10 s
14. 14.⏱️ A video is 425 seconds long. How long is that in minutes and seconds? (a) 8 min 5 s (b) 4 min 25 s (c) 7 min 5 s (d) 7 min 35 s
15. 15.⏱️ A video is 315 seconds long. How long is that in minutes and seconds? (a) 5 min 15 s (b) 6 min 15 s (c) 5 min 45 s (d) 3 min 15 s
16. 16.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
17. 17.⏱️ A 102-second clip is sped up to 3× speed. How long does it last now (in seconds)?
18. 18.⏱️ Your video must be 120 seconds long. Your clips add up to 76 seconds. How many more seconds of video do you need?
19. 19.⏱️ How many seconds is 1 minute 58 seconds?
20. 20.⏱️ Your video must be 60 seconds long. Your clips add up to 9 seconds. How many more seconds of video do you need?
21. 21.⏱️ A video has three clips of 47, 31 and 21 seconds. How long is the video (in seconds)?
22. 22.⏱️ How many seconds is 4 minutes 32 seconds?
23. 23.⏱️ Your video must be 60 seconds long. Your clips add up to 47 seconds. How many more seconds of video do you need?
24. 24.⏱️ A 100-second clip is sped up to 4× speed. How long does it last now (in seconds)?
25. 25.⏱️ A video has three clips of 14, 39 and 23 seconds. How long is the video (in seconds)?
26. 26.⏱️ A video has three clips of 8, 19 and 57 seconds. How long is the video (in seconds)?
27. 27.⏱️ Your video must be 180 seconds long. Your clips add up to 25 seconds. How many more seconds of video do you need?
28. 28.⏱️ How many seconds is 4 minutes 11 seconds?
29. 29.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
30. 30.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) the shortest clip (c) always 1 minute (d) the longest clip
31. 31.⏱️ A video has three clips of 5, 12 and 50 seconds. How long is the video (in seconds)?
32. 32.⏱️ A video has three clips of 42, 14 and 17 seconds. How long is the video (in seconds)?
33. 33.⏱️ A 24-second clip is sped up to 4× speed. How long does it last now (in seconds)?
34. 34.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
35. 35.⏱️ A video has three clips of 23, 35 and 44 seconds. How long is the video (in seconds)?
36. 36.⏱️ A video has three clips of 59, 19 and 60 seconds. How long is the video (in seconds)?
37. 37.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
38. 38.⏱️ A video is 385 seconds long. How long is that in minutes and seconds? (a) 6 min 25 s (b) 6 min 55 s (c) 7 min 25 s (d) 3 min 85 s
39. 39.⏱️ How many seconds is 3 minutes 47 seconds?
40. 40.⏱️ Your video must be 180 seconds long. Your clips add up to 115 seconds. How many more seconds of video do you need?

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