Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 121 · 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 7 minutes 46 seconds?
2. 2.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
3. 3.⏱️ A video has three clips of 7, 51 and 45 seconds. How long is the video (in seconds)?
4. 4.⏱️ A video has three clips of 46, 17 and 35 seconds. How long is the video (in seconds)?
5. 5.⏱️ A 74-second clip is sped up to 2× speed. How long does it last now (in seconds)?
6. 6.⏱️ Your video must be 180 seconds long. Your clips add up to 65 seconds. How many more seconds of video do you need?
7. 7.⏱️ A 22-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
8. 8.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
9. 9.⏱️ A video has three clips of 16, 14 and 18 seconds. How long is the video (in seconds)?
10. 10.⏱️ How many seconds is 5 minutes 13 seconds?
11. 11.⏱️ Your video must be 90 seconds long. Your clips add up to 66 seconds. How many more seconds of video do you need?
12. 12.⏱️ A video is 370 seconds long. How long is that in minutes and seconds? (a) 6 min 40 s (b) 7 min 10 s (c) 3 min 70 s (d) 6 min 10 s
13. 13.⏱️ A video is 85 seconds long. How long is that in minutes and seconds? (a) 1 min 25 s (b) 2 min 25 s (c) 3 min 25 s (d) 1 min 55 s
14. 14.⏱️ A video has three clips of 12, 42 and 10 seconds. How long is the video (in seconds)?
15. 15.⏱️ How many seconds are in 1 minute? (a) 30 (b) 60 (c) 10 (d) 100
16. 16.⏱️ A video has three clips of 54, 55 and 46 seconds. How long is the video (in seconds)?
17. 17.⏱️ How many seconds is 4 minutes 54 seconds?
18. 18.⏱️ How many seconds is 3 minutes 12 seconds?
19. 19.⏱️ Your video must be 180 seconds long. Your clips add up to 16 seconds. How many more seconds of video do you need?
20. 20.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the sum of the clips (c) the longest clip (d) always 1 minute
21. 21.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) half as long (c) twice as long (d) the same length
22. 22.⏱️ A video is 310 seconds long. How long is that in minutes and seconds? (a) 6 min 10 s (b) 5 min 10 s (c) 3 min 10 s (d) 5 min 40 s
23. 23.⏱️ Your video must be 180 seconds long. Your clips add up to 5 seconds. How many more seconds of video do you need?
24. 24.⏱️ A video has three clips of 50, 24 and 34 seconds. How long is the video (in seconds)?
25. 25.⏱️ A video has three clips of 20, 8 and 53 seconds. How long is the video (in seconds)?
26. 26.⏱️ An 84-second clip is sped up to 3× speed. How long does it last now (in seconds)?
27. 27.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
28. 28.⏱️ An 18-second clip is sped up to 2× speed. How long does it last now (in seconds)?
29. 29.⏱️ A 42-second clip is sped up to 2× speed. How long does it last now (in seconds)?
30. 30.⏱️ A video is 265 seconds long. How long is that in minutes and seconds? (a) 2 min 65 s (b) 4 min 25 s (c) 4 min 55 s (d) 5 min 25 s
31. 31.⏱️ How many seconds is 4 minutes 50 seconds?
32. 32.⏱️ A 14-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
33. 33.⏱️ A video is 110 seconds long. How long is that in minutes and seconds? (a) 1 min 10 s (b) 1 min 50 s (c) 2 min 50 s (d) 1 min 20 s
34. 34.⏱️ A video is 500 seconds long. How long is that in minutes and seconds? (a) 8 min 50 s (b) 8 min 20 s (c) 5 min 0 s (d) 9 min 20 s
35. 35.⏱️ A video is 80 seconds long. How long is that in minutes and seconds? (a) 2 min 20 s (b) 1 min 20 s (c) 3 min 20 s (d) 1 min 50 s
36. 36.⏱️ A 100-second clip is sped up to 4× speed. How long does it last now (in seconds)?
37. 37.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
38. 38.⏱️ A 132-second clip is sped up to 4× speed. How long does it last now (in seconds)?
39. 39.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
40. 40.⏱️ A video is 375 seconds long. How long is that in minutes and seconds? (a) 3 min 75 s (b) 7 min 15 s (c) 6 min 15 s (d) 6 min 45 s

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