Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 66 · 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 20, 14 and 6 seconds. How long is the video (in seconds)?
2. 2.⏱️ 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
3. 3.⏱️ How many seconds are in 1 minute? (a) 30 (b) 60 (c) 10 (d) 100
4. 4.⏱️ A video has three clips of 12, 20 and 47 seconds. How long is the video (in seconds)?
5. 5.⏱️ A video is 240 seconds long. How long is that in minutes and seconds? (a) 2 min 40 s (b) 4 min 30 s (c) 5 min 0 s (d) 4 min 0 s
6. 6.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) silent (c) half as long (d) twice as long
7. 7.⏱️ A video has three clips of 43, 12 and 17 seconds. How long is the video (in seconds)?
8. 8.⏱️ A 74-second clip is sped up to 2× speed. How long does it last now (in seconds)?
9. 9.⏱️ A 104-second clip is sped up to 4× speed. How long does it last now (in seconds)?
10. 10.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
11. 11.⏱️ An 84-second clip is sped up to 3× speed. How long does it last now (in seconds)?
12. 12.⏱️ A video has three clips of 12, 58 and 48 seconds. How long is the video (in seconds)?
13. 13.⏱️ How many seconds is 4 minutes 10 seconds?
14. 14.⏱️ A 124-second clip is sped up to 4× speed. How long does it last now (in seconds)?
15. 15.⏱️ Your video must be 120 seconds long. Your clips add up to 69 seconds. How many more seconds of video do you need?
16. 16.⏱️ How many seconds is 3 minutes 36 seconds?
17. 17.⏱️ A 36-second clip is sped up to 2× speed. How long does it last now (in seconds)?
18. 18.⏱️ A 22-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
19. 19.⏱️ A video is 390 seconds long. How long is that in minutes and seconds? (a) 6 min 0 s (b) 3 min 90 s (c) 6 min 30 s (d) 7 min 30 s
20. 20.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
21. 21.⏱️ A video is 480 seconds long. How long is that in minutes and seconds? (a) 9 min 0 s (b) 4 min 80 s (c) 8 min 0 s (d) 8 min 30 s
22. 22.⏱️ A video has three clips of 17, 48 and 8 seconds. How long is the video (in seconds)?
23. 23.⏱️ A video has three clips of 8, 56 and 45 seconds. How long is the video (in seconds)?
24. 24.⏱️ A video has three clips of 44, 48 and 44 seconds. How long is the video (in seconds)?
25. 25.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
26. 26.⏱️ Your video must be 90 seconds long. Your clips add up to 33 seconds. How many more seconds of video do you need?
27. 27.⏱️ Your video must be 60 seconds long. Your clips add up to 47 seconds. How many more seconds of video do you need?
28. 28.⏱️ A video is 260 seconds long. How long is that in minutes and seconds? (a) 5 min 20 s (b) 2 min 60 s (c) 4 min 20 s (d) 4 min 50 s
29. 29.⏱️ A 56-second clip is sped up to 2× speed. How long does it last now (in seconds)?
30. 30.⏱️ A video is 555 seconds long. How long is that in minutes and seconds? (a) 10 min 15 s (b) 5 min 55 s (c) 9 min 15 s (d) 9 min 45 s
31. 31.⏱️ A video is 200 seconds long. How long is that in minutes and seconds? (a) 4 min 20 s (b) 3 min 50 s (c) 3 min 20 s (d) 2 min 0 s
32. 32.⏱️ A video is 485 seconds long. How long is that in minutes and seconds? (a) 4 min 85 s (b) 8 min 35 s (c) 8 min 5 s (d) 9 min 5 s
33. 33.⏱️ How many seconds is 2 minutes 46 seconds?
34. 34.⏱️ A video is 145 seconds long. How long is that in minutes and seconds? (a) 1 min 45 s (b) 3 min 25 s (c) 2 min 55 s (d) 2 min 25 s
35. 35.⏱️ Your video must be 180 seconds long. Your clips add up to 20 seconds. How many more seconds of video do you need?
36. 36.⏱️ A video has three clips of 16, 36 and 11 seconds. How long is the video (in seconds)?
37. 37.⏱️ Your video must be 90 seconds long. Your clips add up to 59 seconds. How many more seconds of video do you need?
38. 38.⏱️ How many seconds is 9 minutes 26 seconds?
39. 39.⏱️ How many seconds is 5 minutes 24 seconds?
40. 40.⏱️ A video has three clips of 15, 43 and 7 seconds. How long is the video (in seconds)?

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