Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 123 · 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.⏱️ Your video must be 90 seconds long. Your clips add up to 66 seconds. How many more seconds of video do you need?
2. 2.⏱️ Your video must be 90 seconds long. Your clips add up to 60 seconds. How many more seconds of video do you need?
3. 3.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
4. 4.⏱️ Your video must be 120 seconds long. Your clips add up to 69 seconds. How many more seconds of video do you need?
5. 5.⏱️ How many seconds is 5 minutes 57 seconds?
6. 6.⏱️ A 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
7. 7.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
8. 8.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
9. 9.⏱️ How many seconds is 7 minutes 12 seconds?
10. 10.⏱️ A video has three clips of 25, 12 and 5 seconds. How long is the video (in seconds)?
11. 11.⏱️ A video has three clips of 34, 51 and 10 seconds. How long is the video (in seconds)?
12. 12.⏱️ A video has three clips of 24, 45 and 20 seconds. How long is the video (in seconds)?
13. 13.⏱️ A video has three clips of 24, 38 and 29 seconds. How long is the video (in seconds)?
14. 14.⏱️ Your video must be 60 seconds long. Your clips add up to 12 seconds. How many more seconds of video do you need?
15. 15.⏱️ How many seconds is 6 minutes 15 seconds?
16. 16.⏱️ A video has three clips of 20, 37 and 30 seconds. How long is the video (in seconds)?
17. 17.⏱️ How many seconds is 2 minutes 39 seconds?
18. 18.⏱️ A video is 115 seconds long. How long is that in minutes and seconds? (a) 1 min 15 s (b) 1 min 25 s (c) 2 min 55 s (d) 1 min 55 s
19. 19.⏱️ A video has three clips of 45, 35 and 40 seconds. How long is the video (in seconds)?
20. 20.⏱️ How many seconds is 1 minute 14 seconds?
21. 21.⏱️ A 105-second clip is sped up to 3× speed. How long does it last now (in seconds)?
22. 22.⏱️ How many seconds is 7 minutes 5 seconds?
23. 23.⏱️ A 58-second clip is sped up to 2× speed. How long does it last now (in seconds)?
24. 24.⏱️ How many seconds is 2 minutes 1 second?
25. 25.⏱️ A video has three clips of 45, 40 and 46 seconds. How long is the video (in seconds)?
26. 26.⏱️ A video has three clips of 30, 41 and 6 seconds. How long is the video (in seconds)?
27. 27.⏱️ How many seconds are in 1 minute? (a) 60 (b) 100 (c) 30 (d) 10
28. 28.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
29. 29.⏱️ A 45-second clip is sped up to 3× speed. How long does it last now (in seconds)?
30. 30.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
31. 31.⏱️ How many seconds is 4 minutes 56 seconds?
32. 32.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) silent (c) half as long (d) twice as long
33. 33.⏱️ How many seconds is 1 minute 38 seconds?
34. 34.⏱️ How many seconds is 3 minutes 56 seconds?
35. 35.⏱️ How many seconds is 2 minutes 28 seconds?
36. 36.⏱️ A 40-second clip is sped up to 4× speed. How long does it last now (in seconds)?
37. 37.⏱️ How many seconds is 7 minutes 9 seconds?
38. 38.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
39. 39.⏱️ A 104-second clip is sped up to 4× speed. How long does it last now (in seconds)?
40. 40.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) the shortest clip (c) the sum of the clips (d) always 1 minute

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