Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 235 · 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.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) twice as long (c) silent (d) half as long
2. 2.⏱️ How many seconds are in 1 minute? (a) 30 (b) 100 (c) 60 (d) 10
3. 3.⏱️ When you put clips one after another, the video length is … (a) always 1 minute (b) the longest clip (c) the sum of the clips (d) the shortest clip
4. 4.⏱️ Your video must be 180 seconds long. Your clips add up to 61 seconds. How many more seconds of video do you need?
5. 5.⏱️ A video has three clips of 48, 11 and 59 seconds. How long is the video (in seconds)?
6. 6.⏱️ A video has three clips of 34, 40 and 47 seconds. How long is the video (in seconds)?
7. 7.⏱️ How many seconds is 3 minutes 13 seconds?
8. 8.⏱️ A video has three clips of 16, 7 and 33 seconds. How long is the video (in seconds)?
9. 9.⏱️ A 104-second clip is sped up to 4× speed. How long does it last now (in seconds)?
10. 10.⏱️ How many seconds is 3 minutes 37 seconds?
11. 11.⏱️ A video is 135 seconds long. How long is that in minutes and seconds? (a) 2 min 15 s (b) 2 min 45 s (c) 3 min 15 s (d) 1 min 35 s
12. 12.⏱️ A video is 565 seconds long. How long is that in minutes and seconds? (a) 10 min 25 s (b) 9 min 55 s (c) 5 min 65 s (d) 9 min 25 s
13. 13.⏱️ A video has three clips of 39, 54 and 50 seconds. How long is the video (in seconds)?
14. 14.⏱️ A video has three clips of 28, 32 and 53 seconds. How long is the video (in seconds)?
15. 15.⏱️ Your video must be 90 seconds long. Your clips add up to 38 seconds. How many more seconds of video do you need?
16. 16.⏱️ How many seconds is 2 minutes 13 seconds?
17. 17.⏱️ A video has three clips of 38, 20 and 12 seconds. How long is the video (in seconds)?
18. 18.⏱️ A 54-second clip is sped up to 2× speed. How long does it last now (in seconds)?
19. 19.⏱️ A video is 530 seconds long. How long is that in minutes and seconds? (a) 5 min 30 s (b) 9 min 50 s (c) 8 min 50 s (d) 8 min 20 s
20. 20.⏱️ Your video must be 180 seconds long. Your clips add up to 153 seconds. How many more seconds of video do you need?
21. 21.⏱️ A video is 495 seconds long. How long is that in minutes and seconds? (a) 4 min 95 s (b) 8 min 45 s (c) 8 min 15 s (d) 9 min 15 s
22. 22.⏱️ A video has three clips of 53, 23 and 42 seconds. How long is the video (in seconds)?
23. 23.⏱️ How many seconds is 3 minutes 31 seconds?
24. 24.⏱️ How many seconds is 6 minutes 25 seconds?
25. 25.⏱️ Your video must be 90 seconds long. Your clips add up to 14 seconds. How many more seconds of video do you need?
26. 26.⏱️ A video is 355 seconds long. How long is that in minutes and seconds? (a) 5 min 55 s (b) 6 min 55 s (c) 5 min 25 s (d) 3 min 55 s
27. 27.⏱️ A 17-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 18, 29 and 14 seconds. How long is the video (in seconds)?
29. 29.⏱️ A 20-second clip is sped up to 4× speed. How long does it last now (in seconds)?
30. 30.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
31. 31.⏱️ A video has three clips of 8, 10 and 54 seconds. How long is the video (in seconds)?
32. 32.⏱️ A video has three clips of 13, 35 and 55 seconds. How long is the video (in seconds)?
33. 33.⏱️ A video has three clips of 19, 22 and 46 seconds. How long is the video (in seconds)?
34. 34.⏱️ A video has three clips of 16, 45 and 19 seconds. How long is the video (in seconds)?
35. 35.⏱️ Your video must be 90 seconds long. Your clips add up to 36 seconds. How many more seconds of video do you need?
36. 36.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
37. 37.⏱️ Your video must be 120 seconds long. Your clips add up to 111 seconds. How many more seconds of video do you need?
38. 38.⏱️ Your video must be 90 seconds long. Your clips add up to 49 seconds. How many more seconds of video do you need?
39. 39.⏱️ A video is 430 seconds long. How long is that in minutes and seconds? (a) 7 min 40 s (b) 7 min 10 s (c) 4 min 30 s (d) 8 min 10 s
40. 40.⏱️ A video has three clips of 22, 22 and 40 seconds. How long is the video (in seconds)?

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