Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 77 · 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 are in 1 minute? (a) 10 (b) 100 (c) 30 (d) 60
2. 2.⏱️ A 48-second clip is sped up to 4× speed. How long does it last now (in seconds)?
3. 3.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the sum of the clips (c) always 1 minute (d) the longest clip
4. 4.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
5. 5.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
6. 6.⏱️ A video is 435 seconds long. How long is that in minutes and seconds? (a) 4 min 35 s (b) 7 min 45 s (c) 8 min 15 s (d) 7 min 15 s
7. 7.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
8. 8.⏱️ Your video must be 60 seconds long. Your clips add up to 54 seconds. How many more seconds of video do you need?
9. 9.⏱️ Your video must be 120 seconds long. Your clips add up to 110 seconds. How many more seconds of video do you need?
10. 10.⏱️ Your video must be 180 seconds long. Your clips add up to 134 seconds. How many more seconds of video do you need?
11. 11.⏱️ How many seconds is 6 minutes 15 seconds?
12. 12.⏱️ A video has three clips of 33, 13 and 36 seconds. How long is the video (in seconds)?
13. 13.⏱️ An 87-second clip is sped up to 3× speed. How long does it last now (in seconds)?
14. 14.⏱️ How many seconds is 2 minutes 52 seconds?
15. 15.⏱️ How many seconds is 1 minute 12 seconds?
16. 16.⏱️ A video is 395 seconds long. How long is that in minutes and seconds? (a) 6 min 35 s (b) 7 min 35 s (c) 3 min 95 s (d) 6 min 5 s
17. 17.⏱️ A video has three clips of 51, 60 and 47 seconds. How long is the video (in seconds)?
18. 18.⏱️ How many seconds is 1 minute 32 seconds?
19. 19.⏱️ Your video must be 180 seconds long. Your clips add up to 45 seconds. How many more seconds of video do you need?
20. 20.⏱️ A video has three clips of 48, 39 and 54 seconds. How long is the video (in seconds)?
21. 21.⏱️ A 24-second clip is sped up to 2× speed. How long does it last now (in seconds)?
22. 22.⏱️ A 34-second clip is sped up to 2× speed. How long does it last now (in seconds)?
23. 23.⏱️ How many seconds is 2 minutes 26 seconds?
24. 24.⏱️ A video has three clips of 44, 7 and 35 seconds. How long is the video (in seconds)?
25. 25.⏱️ A 15-second clip is sped up to 3× speed. How long does it last now (in seconds)?
26. 26.⏱️ How many seconds is 7 minutes 41 seconds?
27. 27.⏱️ A video is 530 seconds long. How long is that in minutes and seconds? (a) 5 min 30 s (b) 8 min 20 s (c) 8 min 50 s (d) 9 min 50 s
28. 28.⏱️ A 21-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
29. 29.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) twice as long (c) half as long (d) silent
30. 30.⏱️ A video has three clips of 24, 19 and 19 seconds. How long is the video (in seconds)?
31. 31.⏱️ Your video must be 90 seconds long. Your clips add up to 53 seconds. How many more seconds of video do you need?
32. 32.⏱️ How many seconds is 6 minutes 55 seconds?
33. 33.⏱️ A 58-second clip is sped up to 2× speed. How long does it last now (in seconds)?
34. 34.⏱️ Your video must be 90 seconds long. Your clips add up to 32 seconds. How many more seconds of video do you need?
35. 35.⏱️ How many seconds is 1 minute 2 seconds?
36. 36.⏱️ Your video must be 90 seconds long. Your clips add up to 7 seconds. How many more seconds of video do you need?
37. 37.⏱️ How many seconds is 9 minutes 8 seconds?
38. 38.⏱️ How many seconds is 5 minutes 16 seconds?
39. 39.⏱️ A video has three clips of 20, 52 and 50 seconds. How long is the video (in seconds)?
40. 40.⏱️ Your video must be 180 seconds long. Your clips add up to 136 seconds. How many more seconds of video do you need?

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