Grade 9 Digital literacy worksheet

What is on the worksheet

1. An image is 300 pixels wide and 60 pixels high. How many pixels does it contain?

2. How many bits are in 2723 bytes?

3. A file shrinks from 820 KB to 738 KB. What percentage of its original size was saved?

4. A file shrinks from 1460 KB to 1314 KB. What percentage of its original size was saved?

5. How many bits are in 9687 bytes?

6. An image is 110 pixels wide and 70 pixels high. How many pixels does it contain?

7. An image is 80 pixels wide and 310 pixels high. How many pixels does it contain?

8. How many bits are in 2828 bytes?

9. An image is 170 pixels wide and 270 pixels high. How many pixels does it contain?

10. How many bits are in 2350 bytes?

11. An image is 240 pixels wide and 110 pixels high. How many pixels does it contain?

12. A raw image is 66 × 57 pixels with 4 bytes per pixel. Ignoring headers and compression, how many bytes?

13. A file shrinks from 1440 KB to 144 KB. What percentage of its original size was saved?

14. A raw image is 143 × 152 pixels with 2 bytes per pixel. Ignoring headers and compression, how many bytes?

15. An image is 350 pixels wide and 400 pixels high. How many pixels does it contain?

16. How many bits are in 6244 bytes?

17. How many bits are in 4729 bytes?

18. How many bits are in 1588 bytes?

19. A raw image is 95 × 163 pixels with 3 bytes per pixel. Ignoring headers and compression, how many bytes?

20. An image is 130 pixels wide and 160 pixels high. How many pixels does it contain?