Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 73 · 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) silent (b) the same length (c) half as long (d) twice as long
2. 2.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
3. 3.⏱️ A video is 480 seconds long. How long is that in minutes and seconds? (a) 9 min 0 s (b) 8 min 0 s (c) 8 min 30 s (d) 4 min 80 s
4. 4.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
5. 5.⏱️ An 87-second clip is sped up to 3× speed. How long does it last now (in seconds)?
6. 6.⏱️ Your video must be 180 seconds long. Your clips add up to 104 seconds. How many more seconds of video do you need?
7. 7.⏱️ A 15-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
8. 8.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) always 1 minute (c) the sum of the clips (d) the shortest clip
9. 9.⏱️ An 81-second clip is sped up to 3× speed. How long does it last now (in seconds)?
10. 10.⏱️ A video has three clips of 58, 45 and 26 seconds. How long is the video (in seconds)?
11. 11.⏱️ A video has three clips of 21, 38 and 13 seconds. How long is the video (in seconds)?
12. 12.⏱️ A 74-second clip is sped up to 2× speed. How long does it last now (in seconds)?
13. 13.⏱️ A video is 445 seconds long. How long is that in minutes and seconds? (a) 4 min 45 s (b) 7 min 25 s (c) 7 min 55 s (d) 8 min 25 s
14. 14.⏱️ Your video must be 180 seconds long. Your clips add up to 85 seconds. How many more seconds of video do you need?
15. 15.⏱️ A video is 540 seconds long. How long is that in minutes and seconds? (a) 9 min 0 s (b) 10 min 0 s (c) 9 min 30 s (d) 5 min 40 s
16. 16.⏱️ Your video must be 180 seconds long. Your clips add up to 143 seconds. How many more seconds of video do you need?
17. 17.⏱️ How many seconds is 4 minutes 27 seconds?
18. 18.⏱️ A 90-second clip is sped up to 3× speed. How long does it last now (in seconds)?
19. 19.⏱️ Your video must be 60 seconds long. Your clips add up to 32 seconds. How many more seconds of video do you need?
20. 20.⏱️ Your video must be 60 seconds long. Your clips add up to 22 seconds. How many more seconds of video do you need?
21. 21.⏱️ How many seconds is 1 minute 14 seconds?
22. 22.⏱️ A video has three clips of 15, 35 and 10 seconds. How long is the video (in seconds)?
23. 23.⏱️ A 70-second clip is sped up to 2× speed. How long does it last now (in seconds)?
24. 24.⏱️ Your video must be 60 seconds long. Your clips add up to 42 seconds. How many more seconds of video do you need?
25. 25.⏱️ A video is 390 seconds long. How long is that in minutes and seconds? (a) 7 min 30 s (b) 6 min 30 s (c) 3 min 90 s (d) 6 min 0 s
26. 26.⏱️ How many seconds are in 1 minute? (a) 100 (b) 30 (c) 60 (d) 10
27. 27.⏱️ How many seconds is 7 minutes 15 seconds?
28. 28.⏱️ How many seconds is 3 minutes 35 seconds?
29. 29.⏱️ Your video must be 180 seconds long. Your clips add up to 83 seconds. How many more seconds of video do you need?
30. 30.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
31. 31.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
32. 32.⏱️ A video has three clips of 24, 53 and 27 seconds. How long is the video (in seconds)?
33. 33.⏱️ A 22-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
34. 34.⏱️ How many seconds is 3 minutes 13 seconds?
35. 35.⏱️ A video is 75 seconds long. How long is that in minutes and seconds? (a) 1 min 45 s (b) 2 min 15 s (c) 3 min 15 s (d) 1 min 15 s
36. 36.⏱️ A video is 120 seconds long. How long is that in minutes and seconds? (a) 1 min 20 s (b) 2 min 30 s (c) 2 min 0 s (d) 3 min 0 s
37. 37.⏱️ A video is 555 seconds long. How long is that in minutes and seconds? (a) 10 min 15 s (b) 9 min 45 s (c) 9 min 15 s (d) 5 min 55 s
38. 38.⏱️ A video has three clips of 48, 15 and 49 seconds. How long is the video (in seconds)?
39. 39.⏱️ How many seconds is 8 minutes 23 seconds?
40. 40.⏱️ A video has three clips of 13, 28 and 42 seconds. How long is the video (in seconds)?

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