Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 46 · 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 video has three clips of 41, 12 and 11 seconds. How long is the video (in seconds)?
2. 2.⏱️ A 24-second clip is sped up to 4× speed. How long does it last now (in seconds)?
3. 3.⏱️ A video has three clips of 6, 39 and 16 seconds. How long is the video (in seconds)?
4. 4.⏱️ A video has three clips of 12, 26 and 31 seconds. How long is the video (in seconds)?
5. 5.⏱️ Your video must be 180 seconds long. Your clips add up to 44 seconds. How many more seconds of video do you need?
6. 6.⏱️ A video is 390 seconds long. How long is that in minutes and seconds? (a) 7 min 30 s (b) 6 min 0 s (c) 6 min 30 s (d) 3 min 90 s
7. 7.⏱️ A video has three clips of 29, 5 and 19 seconds. How long is the video (in seconds)?
8. 8.⏱️ How many seconds is 1 minute 58 seconds?
9. 9.⏱️ How many seconds is 8 minutes 16 seconds?
10. 10.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) twice as long (c) silent (d) half as long
11. 11.⏱️ How many seconds are in 1 minute? (a) 10 (b) 100 (c) 60 (d) 30
12. 12.⏱️ When you put clips one after another, the video length is … (a) always 1 minute (b) the shortest clip (c) the sum of the clips (d) the longest clip
13. 13.⏱️ A video has three clips of 25, 41 and 58 seconds. How long is the video (in seconds)?
14. 14.⏱️ A 56-second clip is sped up to 2× speed. How long does it last now (in seconds)?
15. 15.⏱️ A 48-second clip is sped up to 2× speed. How long does it last now (in seconds)?
16. 16.⏱️ A video has three clips of 58, 51 and 24 seconds. How long is the video (in seconds)?
17. 17.⏱️ A video has three clips of 44, 58 and 54 seconds. How long is the video (in seconds)?
18. 18.⏱️ How many seconds is 4 minutes 31 seconds?
19. 19.⏱️ A video has three clips of 57, 13 and 51 seconds. How long is the video (in seconds)?
20. 20.⏱️ How many seconds is 9 minutes 36 seconds?
21. 21.⏱️ Your video must be 90 seconds long. Your clips add up to 83 seconds. How many more seconds of video do you need?
22. 22.⏱️ How many seconds is 2 minutes 18 seconds?
23. 23.⏱️ How many seconds is 6 minutes 40 seconds?
24. 24.⏱️ How many seconds is 1 minute 42 seconds?
25. 25.⏱️ A video is 445 seconds long. How long is that in minutes and seconds? (a) 7 min 25 s (b) 8 min 25 s (c) 7 min 55 s (d) 4 min 45 s
26. 26.⏱️ An 84-second clip is sped up to 4× speed. How long does it last now (in seconds)?
27. 27.⏱️ A video is 80 seconds long. How long is that in minutes and seconds? (a) 1 min 20 s (b) 2 min 20 s (c) 1 min 50 s (d) 3 min 20 s
28. 28.⏱️ Your video must be 180 seconds long. Your clips add up to 89 seconds. How many more seconds of video do you need?
29. 29.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
30. 30.⏱️ How many seconds is 6 minutes 26 seconds?
31. 31.⏱️ How many seconds is 3 minutes 46 seconds?
32. 32.⏱️ An 18-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
33. 33.⏱️ A 7-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
34. 34.⏱️ An 11-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 13, 10 and 27 seconds. How long is the video (in seconds)?
36. 36.⏱️ How many seconds is 8 minutes 46 seconds?
37. 37.⏱️ How many seconds is 7 minutes 37 seconds?
38. 38.⏱️ A video is 430 seconds long. How long is that in minutes and seconds? (a) 7 min 40 s (b) 4 min 30 s (c) 8 min 10 s (d) 7 min 10 s
39. 39.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
40. 40.⏱️ How many seconds is 5 minutes 22 seconds?

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