Original unit assessment covering the skills listed below. This is not an official past paper or a complete qualification mock. Suggested time is a guide, not an exam-board requirement.
30 minutes · 30 marks
Name: ____________________ · Date: ____________
1. Convert the decimal integer 67 to unsigned binary without leading zeros. (2 marks)
2. Convert the unsigned binary number 10100110 to decimal. (2 marks)
3. Convert the unsigned binary number 11111110 to decimal. (2 marks)
4. Convert the decimal integer 20 to unsigned binary without leading zeros. (2 marks)
5. Convert the decimal integer 52 to unsigned binary without leading zeros. (2 marks)
WorksheetWise · Standard · 1097
Practice assessment · Computing
Original unit assessment covering the skills listed below. This is not an official past paper or a complete qualification mock. Suggested time is a guide, not an exam-board requirement.
30 minutes · 30 marks
Name: ____________________ · Date: ____________
6. Trace this algorithm. Start x = 30. Repeat 5 times: x ← x + 9. What is the final x? (2 marks)
7. Trace this algorithm. Start x = 17. Repeat 4 times: x ← x + 1. What is the final x? (2 marks)
8. Trace this algorithm. Start x = 16. Repeat 5 times: x ← x + 6. What is the final x? (2 marks)
9. Trace this algorithm. Start x = 6. Repeat 6 times: x ← x + 1. What is the final x? (2 marks)
10. Trace this algorithm. Start x = 19. Repeat 3 times: x ← x + 1. What is the final x? (2 marks)
WorksheetWise · Standard · 1097
Practice assessment · Computing
Original unit assessment covering the skills listed below. This is not an official past paper or a complete qualification mock. Suggested time is a guide, not an exam-board requirement.
30 minutes · 30 marks
Name: ____________________ · Date: ____________
11. Use 1 for true and 0 for false. Evaluate: 0 OR 0. (2 marks)
12. Use 1 for true and 0 for false. Evaluate: NOT (0 OR 1). (2 marks)
13. Use 1 for true and 0 for false. Evaluate: NOT (1 OR 0). (2 marks)
14. Use 1 for true and 0 for false. Evaluate: 1 OR 0. (2 marks)
15. Use 1 for true and 0 for false. Evaluate: NOT (1 AND 1). (2 marks)
WorksheetWise · Standard · 1097
Practice assessment · Computing — Answer key
Original unit assessment covering the skills listed below. This is not an official past paper or a complete qualification mock. Suggested time is a guide, not an exam-board requirement.
30 minutes · 30 marks
1. Convert the decimal integer 67 to unsigned binary without leading zeros. (2 marks)
1000011
64 + 2 + 1 = 67
2. Convert the unsigned binary number 10100110 to decimal. (2 marks)
166
128 + 32 + 4 + 2 = 166
3. Convert the unsigned binary number 11111110 to decimal. (2 marks)
254
128 + 64 + 32 + 16 + 8 + 4 + 2 = 254
4. Convert the decimal integer 20 to unsigned binary without leading zeros. (2 marks)
10100
16 + 4 = 20
5. Convert the decimal integer 52 to unsigned binary without leading zeros. (2 marks)
110100
32 + 16 + 4 = 52
WorksheetWise · Standard · 1097
Practice assessment · Computing — Answer key
Original unit assessment covering the skills listed below. This is not an official past paper or a complete qualification mock. Suggested time is a guide, not an exam-board requirement.
30 minutes · 30 marks
6. Trace this algorithm. Start x = 30. Repeat 5 times: x ← x + 9. What is the final x? (2 marks)
75
30 → 39 → 48 → 57 → 66 → 75
7. Trace this algorithm. Start x = 17. Repeat 4 times: x ← x + 1. What is the final x? (2 marks)
21
17 → 18 → 19 → 20 → 21
8. Trace this algorithm. Start x = 16. Repeat 5 times: x ← x + 6. What is the final x? (2 marks)
46
16 → 22 → 28 → 34 → 40 → 46
9. Trace this algorithm. Start x = 6. Repeat 6 times: x ← x + 1. What is the final x? (2 marks)
12
6 → 7 → 8 → 9 → 10 → 11 → 12
10. Trace this algorithm. Start x = 19. Repeat 3 times: x ← x + 1. What is the final x? (2 marks)
22
19 → 20 → 21 → 22
WorksheetWise · Standard · 1097
Practice assessment · Computing — Answer key
Original unit assessment covering the skills listed below. This is not an official past paper or a complete qualification mock. Suggested time is a guide, not an exam-board requirement.
30 minutes · 30 marks
11. Use 1 for true and 0 for false. Evaluate: 0 OR 0. (2 marks)
0
AND is 1 only when both inputs are 1; OR is 1 when at least one input is 1; NOT reverses 0 and 1. 0 OR 0 = 0
12. Use 1 for true and 0 for false. Evaluate: NOT (0 OR 1). (2 marks)
0
AND is 1 only when both inputs are 1; OR is 1 when at least one input is 1; NOT reverses 0 and 1. NOT (0 OR 1) = 0
13. Use 1 for true and 0 for false. Evaluate: NOT (1 OR 0). (2 marks)
0
AND is 1 only when both inputs are 1; OR is 1 when at least one input is 1; NOT reverses 0 and 1. NOT (1 OR 0) = 0
14. Use 1 for true and 0 for false. Evaluate: 1 OR 0. (2 marks)
1
AND is 1 only when both inputs are 1; OR is 1 when at least one input is 1; NOT reverses 0 and 1. 1 OR 0 = 1
15. Use 1 for true and 0 for false. Evaluate: NOT (1 AND 1). (2 marks)
0
AND is 1 only when both inputs are 1; OR is 1 when at least one input is 1; NOT reverses 0 and 1. NOT (1 AND 1) = 0
WorksheetWise authors these practice questions and translations. Numerical answers are checked by automated tests. Reading and history include marking guidance. These materials have not been independently certified by an exam board.
For US classrooms and learning at home. Letter paper is selected initially. Choose number ranges to match the current lesson; grade placement varies, so these activities are organised by skill rather than a claimed Common Core grade.