plumiDesigning, creating and refining algorithms: OCR GCSE Computer Science questions
Every OCR GCSE Computer Science exam question on 2.1.2 Designing, creating and refining algorithms, 2022–2025, with its mark scheme and examiner’s report.
Paper
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Calculations
Q2(a)
The whole paper ↗Q6(d)(i)
The whole paper ↗Q6(d)(ii)
The whole paper ↗Q6(e)
The whole paper ↗Q3(b)
The whole paper ↗Q4(a)
The whole paper ↗Q9(b)
The whole paper ↗Q9(f)
The whole paper ↗Q1(d)
The whole paper ↗Q2(b)
The whole paper ↗Q5(c)
The whole paper ↗Q2(b)
The whole paper ↗Q2(c)
The whole paper ↗Q2(d)(ii)
The whole paper ↗Q4(c)
The whole paper ↗Q5(d)
The whole paper ↗Q5(e)
The whole paper ↗Q2(a)
The whole paper ↗Q2(b)
The whole paper ↗
All 26 questions on Designing, creating and refining algorithms, as a list
- June 2025, Paper 2, Q2(a) (2 marks): Complete the table by identifying how many times "OK" will be output for when each value is input. Input value Number of times "OK" is output 3 10 [2]
- June 2025, Paper 2, Q6(d)(i) (4 marks): Complete the trace table for the algorithm. You may not need to use all rows in the table. count x Line number Output [4]
- June 2025, Paper 2, Q6(d)(ii) (2 marks): The array actNumbers is changed to include data for two more stages. The new array is shown: 0 1 2 3 4 Index 10 14 6 9 11 Data actNumbers The algorithm from par
- June 2025, Paper 2, Q6(e) (6 marks): There are 500 tickets available for the music festival. The number of tickets currently available is stored in the variable tickets Complete the algorithm to: •
- June 2024, Paper 2, Q2 (4 marks): An algorithm decides if a number is odd or even. An odd number divided by 2 will give the remainder 1. The flowchart statements have been written for the algori
- June 2024, Paper 2, Q3(b) (4 marks): A student writes an algorithm to input two numbers and add them together to create a total. If the total is between 10 and 20 inclusive, "success" is output. If
- June 2024, Paper 2, Q4(a) (2 marks): Identify one input and one output for the program. Input Output [2]
- June 2024, Paper 2, Q9(b) (4 marks): This algorithm calculates the number of points a student gets for the distance they throw in the javelin: 01 javelinThrow = input("Enter distance") 02 yearGroup
- June 2024, Paper 2, Q9(f) (6 marks): An algorithm works out which team has won (has the highest score). Write an algorithm to: • prompt the user to enter a team name and score, or to enter "stop" t
- June 2023, Paper 2, Q1(d) (3 marks): Read the following pseudocode algorithm: 01 start = 3 02 do 03 print(start) 04 start = start - 1 05 until start == -1 06 print("Finished") Complete the followin
- June 2023, Paper 2, Q2(b) (4 marks): Identify two logic errors in the pseudocode algorithm. Write the refined line to correct each error. Error 1 line number Corrected line Error 2 line number Corr
- June 2023, Paper 2, Q5(c) (6 marks): Write an algorithm to play this game. The rules are repeated from the start of the question here: • the player is asked 3 addition questions • each question ask
- June 2022, Paper 2, Q2(b) (5 marks): The restaurant needs an algorithm designing to help employees work out if a customer can have a half price meal or not. It should: • input required data • decid
- June 2022, Paper 2, Q2(c) (2 marks): The restaurant adds a service charge to the cost of a meal depending on the number of people at a table. If there are more than five people 5% is added to the t
- June 2022, Paper 2, Q2(d)(ii) (4 marks): Complete the following trace table for the given algorithm when the surname “Kofi” and the year 2021 are entered. You may not need to use all rows in the table.
- June 2022, Paper 2, Q4(c) (6 marks): Jack decides to improve his program. He wants to be able to input how many numbers to add together each time the algorithm runs, and also wants it to calculate
- June 2022, Paper 2, Q5(d) (2 marks): The hotel has nine rooms that are numbered from room 0 to room 8. The number of people currently staying in each room is stored in an array with the identifier
- June 2022, Paper 2, Q5(e) (6 marks): The hotel car park charges £4 per hour. If the car is electric, this price is halved to £2 per hour. Write an algorithm to: • take as input the number of hours
- Specimen, Paper 2, Q2(a) (5 marks): Complete the pseudocode for this program. num1 = ……………………………………………… num2 = input("enter second number") ……………………… num1 > ……………………… then ……………………………………………… else
- Specimen, Paper 2, Q2(b) (5 marks): A second program needs to perform the following tasks: • Input a number from the user • Double the number input and print the result • Repeat bullets 1 and 2 un
- Specimen, Paper 2, Q4(a) (1 mark): State, using the process in Fig. 2, the username for Rebecca Ellis. ……………………………………………………………………………………………………………. [1]
- Specimen, Paper 2, Q4(b)(i) (1 mark): What would be the username for a teacher called Fred Biscuit using the updated process? ……………………………………………………………………………….……………………... [1]
- Specimen, Paper 2, Q4(b)(ii) (6 marks): Write an algorithm for the updated program design shown in question 4(b)(i). ……………………………………………………………………………………………..…………… ……………………………………………………………………………………………..………
- Specimen, Paper 2, Q8(e) (4 marks): The following program uses a condition-controlled loop. x = 15 y = 0 while x > 0 y = y + 1 x = x – y endwhile print(y) Complete the trace table to test this pro
- Specimen, Paper 2, Q8(g)(i) (2 marks): Identify the input and output required from this algorithm. Input …….……………………………………………………………………………………………… ……...…………………………………………………………………………………………………… Output …..
- Specimen, Paper 2, Q8(g)(iii) (4 marks): The following flowchart outputs a message depending on how long each person has spent playing computer games. START END Rewrite the flowchart as a program. You
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