Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 151 · 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 28, 8 and 5 seconds. How long is the video (in seconds)?
2. 2.⏱️ Your video must be 60 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
3. 3.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) half as long (c) the same length (d) twice as long
4. 4.⏱️ Your video must be 180 seconds long. Your clips add up to 163 seconds. How many more seconds of video do you need?
5. 5.⏱️ How many seconds is 5 minutes 45 seconds?
6. 6.⏱️ How many seconds is 3 minutes 9 seconds?
7. 7.⏱️ A video is 415 seconds long. How long is that in minutes and seconds? (a) 4 min 15 s (b) 6 min 25 s (c) 7 min 55 s (d) 6 min 55 s
8. 8.⏱️ A video is 195 seconds long. How long is that in minutes and seconds? (a) 1 min 95 s (b) 3 min 45 s (c) 3 min 15 s (d) 4 min 15 s
9. 9.⏱️ A video has three clips of 17, 46 and 11 seconds. How long is the video (in seconds)?
10. 10.⏱️ A video has three clips of 38, 60 and 56 seconds. How long is the video (in seconds)?
11. 11.⏱️ A video has three clips of 10, 35 and 13 seconds. How long is the video (in seconds)?
12. 12.⏱️ A video is 515 seconds long. How long is that in minutes and seconds? (a) 5 min 15 s (b) 9 min 35 s (c) 8 min 35 s (d) 8 min 5 s
13. 13.⏱️ A video has three clips of 23, 49 and 35 seconds. How long is the video (in seconds)?
14. 14.⏱️ How many seconds is 5 minutes 8 seconds?
15. 15.⏱️ How many seconds is 8 minutes 16 seconds?
16. 16.⏱️ Your video must be 120 seconds long. Your clips add up to 76 seconds. How many more seconds of video do you need?
17. 17.⏱️ A video has three clips of 33, 56 and 58 seconds. How long is the video (in seconds)?
18. 18.⏱️ A video is 430 seconds long. How long is that in minutes and seconds? (a) 4 min 30 s (b) 8 min 10 s (c) 7 min 10 s (d) 7 min 40 s
19. 19.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
20. 20.⏱️ A 28-second clip is sped up to 2× speed. How long does it last now (in seconds)?
21. 21.⏱️ How many seconds are in 1 minute? (a) 100 (b) 30 (c) 60 (d) 10
22. 22.⏱️ A video is 260 seconds long. How long is that in minutes and seconds? (a) 2 min 60 s (b) 4 min 50 s (c) 4 min 20 s (d) 5 min 20 s
23. 23.⏱️ A video has three clips of 25, 9 and 58 seconds. How long is the video (in seconds)?
24. 24.⏱️ Your video must be 120 seconds long. Your clips add up to 11 seconds. How many more seconds of video do you need?
25. 25.⏱️ Your video must be 120 seconds long. Your clips add up to 14 seconds. How many more seconds of video do you need?
26. 26.⏱️ An 8-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
27. 27.⏱️ Your video must be 90 seconds long. Your clips add up to 8 seconds. How many more seconds of video do you need?
28. 28.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) always 1 minute (c) the sum of the clips (d) the longest clip
29. 29.⏱️ A video is 565 seconds long. How long is that in minutes and seconds? (a) 9 min 25 s (b) 10 min 25 s (c) 5 min 65 s (d) 9 min 55 s
30. 30.⏱️ How many seconds is 1 minute 17 seconds?
31. 31.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
32. 32.⏱️ Your video must be 90 seconds long. Your clips add up to 78 seconds. How many more seconds of video do you need?
33. 33.⏱️ A 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
34. 34.⏱️ Your video must be 120 seconds long. Your clips add up to 112 seconds. How many more seconds of video do you need?
35. 35.⏱️ A video has three clips of 12, 51 and 20 seconds. How long is the video (in seconds)?
36. 36.⏱️ How many seconds is 1 minute 16 seconds?
37. 37.⏱️ Your video must be 60 seconds long. Your clips add up to 40 seconds. How many more seconds of video do you need?
38. 38.⏱️ A video is 155 seconds long. How long is that in minutes and seconds? (a) 2 min 35 s (b) 1 min 55 s (c) 2 min 5 s (d) 3 min 35 s
39. 39.⏱️ How many seconds is 5 minutes 6 seconds?
40. 40.⏱️ How many seconds is 7 minutes 41 seconds?

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