Graphic Design Worksheet: Pixels and Image Size

Animation and design lesson 14: Pixels and image size · Set 325 · 40 questions

Creator's tip (Width times height): Pixels = width × height; megapixels = pixels ÷ 1000000. Aspect ratio = width : height. 16:9 wide, 4:3 squarer, 1:1 square, 9:16 tall. Keep the ratio: a 16:9 frame 1920 pixels wide is 1920 ÷ 16 × 9 = 1080 tall. Printing: inches × pixels per inch.

1. 1.🟦 An image is 80 pixels wide and 50 pixels tall. How many pixels does it have in all?
2. 2.Which of these best fits 4:3? (a) a widescreen TV (b) an upright phone screen (c) an older TV screen (d) a phone story clip
3. 3.🟦 You shrink a 440 × 300 pixel image to half its width and half its height. How many pixels does it have now?
4. 4.🟦 An image is 160 × 90 pixels. What is its aspect ratio? (a) 1:1 (b) 3:2 (c) 4:3 (d) 16:9
5. 5.🟦 To print sharply at 150 pixels per inch, how many pixels wide must a photo be for a 12-inch-wide print?
6. 6.🟦 Which aspect ratio best fits a tall phone video? (a) 4:3 (b) 16:9 (c) 9:16 (d) 1:1
7. 7.🟦 An image is 400 pixels wide and 160 pixels tall. How many pixels does it have in all?
8. 8.🟦 To print sharply at 150 pixels per inch, how many pixels wide must a photo be for a 3-inch-wide print?
9. 9.🟦 A photo is 1000 × 4000 pixels. How many megapixels is that (1 megapixel = 1000000 pixels)? =
10. 10.🟦 You shrink a 120 × 500 pixel image to half its width and half its height. How many pixels does it have now?
11. 11.🟦 You shrink a 380 × 580 pixel image to half its width and half its height. How many pixels does it have now?
12. 12.🟦 An image is 100 pixels wide and 200 pixels tall. How many pixels does it have in all?
13. 13.🟦 A 4:3 video frame is 240 pixels wide. How many pixels tall is it?
14. 14.Which of these best fits 16:9? (a) an old-style monitor (b) a phone story clip (c) a square post (d) a laptop film screen
15. 15.🟦 A photo is 2000 × 4000 pixels. How many megapixels is that (1 megapixel = 1000000 pixels)? =
16. 16.🟦 A photo is 1000 × 2500 pixels. How many megapixels is that (1 megapixel = 1000000 pixels)? =
17. 17.🟦 You shrink a 600 × 720 pixel image to half its width and half its height. How many pixels does it have now?
18. 18.🟦 You shrink a 300 × 520 pixel image to half its width and half its height. How many pixels does it have now?
19. 19.🟦 A photo is 6000 × 3000 pixels. How many megapixels is that (1 megapixel = 1000000 pixels)? =
20. 20.🟦 What is a pixel? (a) a font size (b) a type of paper (c) a sound (d) a tiny dot of colour
21. 21.🟦 Zooming in a lot on a small photo makes it look … (a) blocky (pixelated) (b) sharper (c) louder (d) longer
22. 22.🟦 A photo is 1000 × 1500 pixels. How many megapixels is that (1 megapixel = 1000000 pixels)? =
23. 23.🟦 A 4:3 video frame is 600 pixels tall. How many pixels wide is it?
24. 24.Which of these best fits 1:1? (a) a widescreen TV (b) an album cover (c) a tall phone video (d) a laptop film screen
25. 25.🟦 You shrink a 140 × 640 pixel image to half its width and half its height. How many pixels does it have now?
26. 26.🟦 To print sharply at 150 pixels per inch, how many pixels wide must a photo be for an 11-inch-wide print?
27. 27.🟦 You shrink a 140 × 620 pixel image to half its width and half its height. How many pixels does it have now?
28. 28.🟦 A 16:9 frame is … (a) round (b) taller than wide (c) wider than it is tall (d) a perfect square
29. 29.🟦 You shrink a 400 × 120 pixel image to half its width and half its height. How many pixels does it have now?
30. 30.🟦 You shrink a 60 × 760 pixel image to half its width and half its height. How many pixels does it have now?
31. 31.🟦 You shrink a 420 × 240 pixel image to half its width and half its height. How many pixels does it have now?
32. 32.🟦 A photo is 3000 × 1000 pixels. How many megapixels is that (1 megapixel = 1000000 pixels)? =
33. 33.🟦 To print sharply at 150 pixels per inch, how many pixels wide must a photo be for a 2-inch-wide print?
34. 34.🟦 Which aspect ratio best fits a laptop film screen? (a) 4:3 (b) 9:16 (c) 1:1 (d) 16:9
35. 35.🟦 To print sharply at 150 pixels per inch, how many pixels wide must a photo be for an 8-inch-wide print?
36. 36.🟦 An image is 390 pixels wide and 210 pixels tall. How many pixels does it have in all?
37. 37.🟦 An image is 210 pixels wide and 130 pixels tall. How many pixels does it have in all?
38. 38.🟦 An image is 140 × 140 pixels. What is its aspect ratio? (a) 4:3 (b) 16:9 (c) 1:1 (d) 3:2
39. 39.🟦 A photo is 6000 × 4000 pixels. How many megapixels is that (1 megapixel = 1000000 pixels)? =
40. 40.🟦 A photo is 4000 × 1000 pixels. How many megapixels is that (1 megapixel = 1000000 pixels)? =

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