Grade 6 Computer science practice

What is on the worksheet

1. Start with total = 21. Repeat 30 times: add 15 to total. What is the final total?

2. A file shrinks from 80 KB to 52 KB. What percentage of its original size was saved?

3. An image is 330 pixels wide and 110 pixels high. How many pixels does it contain?

4. Using zero-based indexing, what is values[1] for values = [46, 88, 86, 21, 35]?

5. Using zero-based indexing, what is values[3] for values = [20, 12, 35, 37, 89]?

6. Using zero-based indexing, what is values[2] for values = [91, 77, 16, 42, 53]?

7. Start with total = 59. Repeat 16 times: add 11 to total. What is the final total?

8. A file shrinks from 900 KB to 450 KB. What percentage of its original size was saved?

9. Start with total = 31. Repeat 12 times: add 20 to total. What is the final total?

10. A file shrinks from 1400 KB to 980 KB. What percentage of its original size was saved?

11. FOR i FROM 9 TO 114 INCLUSIVE STEP 5: print i. How many numbers are printed?

12. An image is 50 pixels wide and 360 pixels high. How many pixels does it contain?

13. Start with total = 79. Repeat 18 times: add 11 to total. What is the final total?

14. Using zero-based indexing, what is values[1] for values = [52, 77, 13, 24, 27]?

15. An image is 340 pixels wide and 320 pixels high. How many pixels does it contain?

16. How many bits are in 8006 bytes?

17. How many bits are in 9603 bytes?

18. An image is 180 pixels wide and 110 pixels high. How many pixels does it contain?

19. Start with total = 52. Repeat 2 times: add 5 to total. What is the final total?

20. Using zero-based indexing, what is values[1] for values = [54, 38, 43, 76, 81]?