Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 338 · 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 9, 10 and 9 seconds. How long is the video (in seconds)?
2. 2.⏱️ How many seconds is 8 minutes 29 seconds?
3. 3.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) always 1 minute (c) the shortest clip (d) the longest clip
4. 4.⏱️ Speeding a clip up to 2× makes it … (a) twice as long (b) the same length (c) half as long (d) silent
5. 5.⏱️ How many seconds are in 1 minute? (a) 60 (b) 100 (c) 10 (d) 30
6. 6.⏱️ How many seconds is 1 minute 31 seconds?
7. 7.⏱️ A video has three clips of 14, 17 and 53 seconds. How long is the video (in seconds)?
8. 8.⏱️ A video has three clips of 8, 32 and 17 seconds. How long is the video (in seconds)?
9. 9.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
10. 10.⏱️ A video has three clips of 14, 25 and 14 seconds. How long is the video (in seconds)?
11. 11.⏱️ A video has three clips of 39, 15 and 34 seconds. How long is the video (in seconds)?
12. 12.⏱️ A 22-second clip is sped up to 2× speed. How long does it last now (in seconds)?
13. 13.⏱️ A video has three clips of 13, 47 and 9 seconds. How long is the video (in seconds)?
14. 14.⏱️ A 144-second clip is sped up to 4× speed. How long does it last now (in seconds)?
15. 15.⏱️ How many seconds is 8 minutes 52 seconds?
16. 16.⏱️ A video has three clips of 9, 18 and 44 seconds. How long is the video (in seconds)?
17. 17.⏱️ How many seconds is 2 minutes 47 seconds?
18. 18.⏱️ How many seconds is 3 minutes 49 seconds?
19. 19.⏱️ A 102-second clip is sped up to 3× speed. How long does it last now (in seconds)?
20. 20.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
21. 21.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
22. 22.⏱️ A video has three clips of 11, 36 and 33 seconds. How long is the video (in seconds)?
23. 23.⏱️ A video has three clips of 25, 15 and 31 seconds. How long is the video (in seconds)?
24. 24.⏱️ A video has three clips of 7, 47 and 9 seconds. How long is the video (in seconds)?
25. 25.⏱️ How many seconds is 7 minutes 23 seconds?
26. 26.⏱️ How many seconds is 1 minute 16 seconds?
27. 27.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
28. 28.⏱️ A video has three clips of 49, 58 and 45 seconds. How long is the video (in seconds)?
29. 29.⏱️ A video is 270 seconds long. How long is that in minutes and seconds? (a) 2 min 70 s (b) 5 min 30 s (c) 4 min 0 s (d) 4 min 30 s
30. 30.⏱️ A video has three clips of 25, 28 and 25 seconds. How long is the video (in seconds)?
31. 31.⏱️ A video is 245 seconds long. How long is that in minutes and seconds? (a) 2 min 45 s (b) 4 min 35 s (c) 5 min 5 s (d) 4 min 5 s
32. 32.⏱️ A 74-second clip is sped up to 2× speed. How long does it last now (in seconds)?
33. 33.⏱️ A video is 160 seconds long. How long is that in minutes and seconds? (a) 3 min 40 s (b) 2 min 10 s (c) 2 min 40 s (d) 1 min 60 s
34. 34.⏱️ How many seconds is 9 minutes 31 seconds?
35. 35.⏱️ A 23-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
36. 36.⏱️ A video has three clips of 7, 7 and 59 seconds. How long is the video (in seconds)?
37. 37.⏱️ A video is 190 seconds long. How long is that in minutes and seconds? (a) 4 min 10 s (b) 1 min 90 s (c) 3 min 10 s (d) 3 min 40 s
38. 38.⏱️ A 22-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 40, 12 and 17 seconds. How long is the video (in seconds)?
40. 40.⏱️ Your video must be 90 seconds long. Your clips add up to 52 seconds. How many more seconds of video do you need?

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