Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 104 · 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.⏱️ How many seconds is 1 minute 51 seconds?
2. 2.⏱️ A 21-second clip is sped up to 3× speed. How long does it last now (in seconds)?
3. 3.⏱️ A video is 285 seconds long. How long is that in minutes and seconds? (a) 4 min 15 s (b) 2 min 85 s (c) 5 min 45 s (d) 4 min 45 s
4. 4.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) always 1 minute (c) the shortest clip (d) the sum of the clips
5. 5.⏱️ A video is 100 seconds long. How long is that in minutes and seconds? (a) 1 min 0 s (b) 2 min 40 s (c) 1 min 10 s (d) 1 min 40 s
6. 6.⏱️ A 93-second clip is sped up to 3× speed. How long does it last now (in seconds)?
7. 7.⏱️ A video has three clips of 59, 11 and 40 seconds. How long is the video (in seconds)?
8. 8.⏱️ A 64-second clip is sped up to 4× speed. How long does it last now (in seconds)?
9. 9.⏱️ How many seconds are in 1 minute? (a) 30 (b) 100 (c) 10 (d) 60
10. 10.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
11. 11.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
12. 12.⏱️ A video has three clips of 11, 59 and 7 seconds. How long is the video (in seconds)?
13. 13.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
14. 14.⏱️ How many seconds is 5 minutes 24 seconds?
15. 15.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
16. 16.⏱️ A video is 435 seconds long. How long is that in minutes and seconds? (a) 7 min 15 s (b) 4 min 35 s (c) 7 min 45 s (d) 8 min 15 s
17. 17.⏱️ Your video must be 60 seconds long. Your clips add up to 40 seconds. How many more seconds of video do you need?
18. 18.⏱️ A video is 130 seconds long. How long is that in minutes and seconds? (a) 3 min 10 s (b) 1 min 30 s (c) 2 min 40 s (d) 2 min 10 s
19. 19.⏱️ A video is 150 seconds long. How long is that in minutes and seconds? (a) 3 min 30 s (b) 2 min 0 s (c) 2 min 30 s (d) 1 min 50 s
20. 20.⏱️ A video has three clips of 22, 39 and 56 seconds. How long is the video (in seconds)?
21. 21.⏱️ Speeding a clip up to 2× makes it … (a) twice as long (b) silent (c) the same length (d) half as long
22. 22.⏱️ Your video must be 90 seconds long. Your clips add up to 54 seconds. How many more seconds of video do you need?
23. 23.⏱️ Your video must be 180 seconds long. Your clips add up to 157 seconds. How many more seconds of video do you need?
24. 24.⏱️ A 26-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
25. 25.⏱️ Your video must be 180 seconds long. Your clips add up to 44 seconds. How many more seconds of video do you need?
26. 26.⏱️ A video has three clips of 40, 14 and 44 seconds. How long is the video (in seconds)?
27. 27.⏱️ Your video must be 120 seconds long. Your clips add up to 5 seconds. How many more seconds of video do you need?
28. 28.⏱️ A video is 525 seconds long. How long is that in minutes and seconds? (a) 5 min 25 s (b) 8 min 45 s (c) 8 min 15 s (d) 9 min 45 s
29. 29.⏱️ Your video must be 120 seconds long. Your clips add up to 115 seconds. How many more seconds of video do you need?
30. 30.⏱️ How many seconds is 6 minutes 1 second?
31. 31.⏱️ A video is 225 seconds long. How long is that in minutes and seconds? (a) 3 min 45 s (b) 3 min 15 s (c) 4 min 45 s (d) 2 min 25 s
32. 32.⏱️ A video is 420 seconds long. How long is that in minutes and seconds? (a) 8 min 0 s (b) 7 min 30 s (c) 7 min 0 s (d) 4 min 20 s
33. 33.⏱️ A video has three clips of 35, 30 and 47 seconds. How long is the video (in seconds)?
34. 34.⏱️ A video is 560 seconds long. How long is that in minutes and seconds? (a) 10 min 20 s (b) 9 min 50 s (c) 5 min 60 s (d) 9 min 20 s
35. 35.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
36. 36.⏱️ How many seconds is 9 minutes 54 seconds?
37. 37.⏱️ A video has three clips of 31, 41 and 43 seconds. How long is the video (in seconds)?
38. 38.⏱️ A 108-second clip is sped up to 4× speed. How long does it last now (in seconds)?
39. 39.⏱️ A video has three clips of 11, 12 and 57 seconds. How long is the video (in seconds)?
40. 40.⏱️ A video has three clips of 43, 37 and 30 seconds. How long is the video (in seconds)?

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