€“1)
CR GCSE
Computer
OCR
(9–1)
Science
GCSEComputer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
–
J277-02
Computational
Thinking,
–Algorithms
Computational
Thinking,
& Programming
Algorithms
Thinking, Algorithms
& May
Programming
2025&Afternoon
Programming
May 2025
Complete
Afternoon
May 2025
Question
Afternoon
Complete
PaperQuestion
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper Schem
& Mark
2025/2026Page
UK.EDU.OCR1GCSE
of 52 Package Deal | Complete Exam Question Papers with Marking Schemes, Foundation & Higher Tier Bundle
Page 1
2025 OCR GCSE Computer Science
J277/02 Computational thinking, algorithms and programming
Complete Question paper with Marking Scheme Combined
Tuesday 20 May 2025 – Afternoon
GCSE (9–1) Computer Science
J277/02 Computational thinking, algorithms and programming
Time allowed: 1 hour 30 minutes
Do not use:
• a calculator
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
INSTRUCTIONS
• Use black ink.
• Write your answer to each question in the space provided. If you need extra space use
First name(s)
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
Last name
INFORMATION
• The total mark for this paper is 80.
• The marks for each question are shown in brackets [ ].
• This document has 20 pages.
ADVICE
• Read each question carefully before you start your answer.
• We advise you to spend approximately 50 minutes on Section A and approximately
40 minutes on Section B.
© OCR 2025 [601/8355/X] OCR is an exempt Charity
DC (WW/JG) 355817/3 Turn over
Page 12025 1
€“1)
R GCSE
Computer
(9–1)
OCR Science
GCSE
Computer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
– Computational
J277-02
Thinking,
–Algorithms
Computational
Thinking,&Algorithms
Programming
Thinking,&Algorithms
Programming
May 2025&Afternoon
Programming
May 2025Complete
Afternoon
May 2025
Question
Complete
Afternoon
Paper
Question
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper
Scheme
& Mark
,€“1)
CR GCSE
Computer
OCR
(9–1)
Science
GCSEComputer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
–
J277-02
Computational
Thinking,
–Algorithms
Computational
Thinking,
& Programming
Algorithms
Thinking, Algorithms
& May
Programming
2025&Afternoon
Programming
May 2025
Complete
Afternoon
May 2025
Question
Afternoon
Complete
PaperQuestion
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper Schem
& Mark
2025/2026Page
UK.EDU.OCR2GCSE
of 52 Package Deal | Complete Exam Question Papers with Marking Schemes, Foundation & Higher Tier Bundle
Page 2
2
Section A
We advise you to spend approximately 50 minutes on Section A.
1 A program asks a user to enter a number. Only integer values between 1 and 100 (inclusive) are
accepted. The program is tested.
(a) Tick (✓) one or more boxes in each row to identify the type or types of test for each example of
test data.
Invalid /
Example Normal Boundary
erroneous
test data test data test data
test data
27
"Hello"
105
100
[4]
(b) An algorithm is written for the program.
(i) Complete the algorithm for the program.
num = input("Enter a number between 1 and 100")
if num ........................................ AND ..............................................then
print("accepted")
........................................
print("not accepted")
endif
[3]
(ii) Give the identifier of one variable used in the algorithm in part (b)(i).
. ................................................................................................................................................. [1]
(iii) Give one Boolean operator used in the algorithm in part (b)(i).
. ................................................................................................................................................. [1]
© OCR 2025
Page 22025 2
€“1)
R GCSE
Computer
(9–1)
OCR Science
GCSE
Computer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
– Computational
J277-02
Thinking,
–Algorithms
Computational
Thinking,&Algorithms
Programming
Thinking,&Algorithms
Programming
May 2025&Afternoon
Programming
May 2025Complete
Afternoon
May 2025
Question
Complete
Afternoon
Paper
Question
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper
Scheme
& Mark
,€“1)
CR GCSE
Computer
OCR
(9–1)
Science
GCSEComputer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
–
J277-02
Computational
Thinking,
–Algorithms
Computational
Thinking,
& Programming
Algorithms
Thinking, Algorithms
& May
Programming
2025&Afternoon
Programming
May 2025
Complete
Afternoon
May 2025
Question
Afternoon
Complete
PaperQuestion
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper Schem
& Mark
2025/2026Page
UK.EDU.OCR3GCSE
of 52 Package Deal | Complete Exam Question Papers with Marking Schemes, Foundation & Higher Tier Bundle
Page 3
3
2 This flowchart uses iteration.
Start
INPUT x
OUTPUT "OK"
x = x - 2
FALSE
IS x < 0?
TRUE
End
(a) 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]
(b) Iteration is a programming construct.
(i) Identify and describe two different examples of iteration that can be used in a high-level
language.
1 .......................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
2 .......................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
[4]
© OCR 2025 Turn over
Page 32025 3
€“1)
R GCSE
Computer
(9–1)
OCR Science
GCSE
Computer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
– Computational
J277-02
Thinking,
–Algorithms
Computational
Thinking,&Algorithms
Programming
Thinking,&Algorithms
Programming
May 2025&Afternoon
Programming
May 2025Complete
Afternoon
May 2025
Question
Complete
Afternoon
Paper
Question
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper
Scheme
& Mark
,€“1)
CR GCSE
Computer
OCR
(9–1)
Science
GCSEComputer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
–
J277-02
Computational
Thinking,
–Algorithms
Computational
Thinking,
& Programming
Algorithms
Thinking, Algorithms
& May
Programming
2025&Afternoon
Programming
May 2025
Complete
Afternoon
May 2025
Question
Afternoon
Complete
PaperQuestion
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper Schem
& Mark
2025/2026Page
UK.EDU.OCR4GCSE
of 52 Package Deal | Complete Exam Question Papers with Marking Schemes, Foundation & Higher Tier Bundle
Page 4
4
(ii) Give the names of two other programming constructs that are used in a high-level language.
1 .......................................................................................................................................................
2 .......................................................................................................................................................
[2]
(c) A programmer implements the flowchart as a program in a high-level language using an
Integrated Development Environment (IDE).
Identify and describe two tools that the programmer could use in the IDE to create a program
from the flowchart.
Tool 1 ................................................................................................................................................
Description .......................................................................................................................................
..........................................................................................................................................................
Tool 2 ................................................................................................................................................
Description .......................................................................................................................................
..........................................................................................................................................................
[4]
© OCR 2025
Page 42025 4
€“1)
R GCSE
Computer
(9–1)
OCR Science
GCSE
Computer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
– Computational
J277-02
Thinking,
–Algorithms
Computational
Thinking,&Algorithms
Programming
Thinking,&Algorithms
Programming
May 2025&Afternoon
Programming
May 2025Complete
Afternoon
May 2025
Question
Complete
Afternoon
Paper
Question
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper
Scheme
& Mark
CR GCSE
Computer
OCR
(9–1)
Science
GCSEComputer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
–
J277-02
Computational
Thinking,
–Algorithms
Computational
Thinking,
& Programming
Algorithms
Thinking, Algorithms
& May
Programming
2025&Afternoon
Programming
May 2025
Complete
Afternoon
May 2025
Question
Afternoon
Complete
PaperQuestion
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper Schem
& Mark
2025/2026Page
UK.EDU.OCR1GCSE
of 52 Package Deal | Complete Exam Question Papers with Marking Schemes, Foundation & Higher Tier Bundle
Page 1
2025 OCR GCSE Computer Science
J277/02 Computational thinking, algorithms and programming
Complete Question paper with Marking Scheme Combined
Tuesday 20 May 2025 – Afternoon
GCSE (9–1) Computer Science
J277/02 Computational thinking, algorithms and programming
Time allowed: 1 hour 30 minutes
Do not use:
• a calculator
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
INSTRUCTIONS
• Use black ink.
• Write your answer to each question in the space provided. If you need extra space use
First name(s)
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
Last name
INFORMATION
• The total mark for this paper is 80.
• The marks for each question are shown in brackets [ ].
• This document has 20 pages.
ADVICE
• Read each question carefully before you start your answer.
• We advise you to spend approximately 50 minutes on Section A and approximately
40 minutes on Section B.
© OCR 2025 [601/8355/X] OCR is an exempt Charity
DC (WW/JG) 355817/3 Turn over
Page 12025 1
€“1)
R GCSE
Computer
(9–1)
OCR Science
GCSE
Computer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
– Computational
J277-02
Thinking,
–Algorithms
Computational
Thinking,&Algorithms
Programming
Thinking,&Algorithms
Programming
May 2025&Afternoon
Programming
May 2025Complete
Afternoon
May 2025
Question
Complete
Afternoon
Paper
Question
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper
Scheme
& Mark
,€“1)
CR GCSE
Computer
OCR
(9–1)
Science
GCSEComputer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
–
J277-02
Computational
Thinking,
–Algorithms
Computational
Thinking,
& Programming
Algorithms
Thinking, Algorithms
& May
Programming
2025&Afternoon
Programming
May 2025
Complete
Afternoon
May 2025
Question
Afternoon
Complete
PaperQuestion
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper Schem
& Mark
2025/2026Page
UK.EDU.OCR2GCSE
of 52 Package Deal | Complete Exam Question Papers with Marking Schemes, Foundation & Higher Tier Bundle
Page 2
2
Section A
We advise you to spend approximately 50 minutes on Section A.
1 A program asks a user to enter a number. Only integer values between 1 and 100 (inclusive) are
accepted. The program is tested.
(a) Tick (✓) one or more boxes in each row to identify the type or types of test for each example of
test data.
Invalid /
Example Normal Boundary
erroneous
test data test data test data
test data
27
"Hello"
105
100
[4]
(b) An algorithm is written for the program.
(i) Complete the algorithm for the program.
num = input("Enter a number between 1 and 100")
if num ........................................ AND ..............................................then
print("accepted")
........................................
print("not accepted")
endif
[3]
(ii) Give the identifier of one variable used in the algorithm in part (b)(i).
. ................................................................................................................................................. [1]
(iii) Give one Boolean operator used in the algorithm in part (b)(i).
. ................................................................................................................................................. [1]
© OCR 2025
Page 22025 2
€“1)
R GCSE
Computer
(9–1)
OCR Science
GCSE
Computer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
– Computational
J277-02
Thinking,
–Algorithms
Computational
Thinking,&Algorithms
Programming
Thinking,&Algorithms
Programming
May 2025&Afternoon
Programming
May 2025Complete
Afternoon
May 2025
Question
Complete
Afternoon
Paper
Question
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper
Scheme
& Mark
,€“1)
CR GCSE
Computer
OCR
(9–1)
Science
GCSEComputer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
–
J277-02
Computational
Thinking,
–Algorithms
Computational
Thinking,
& Programming
Algorithms
Thinking, Algorithms
& May
Programming
2025&Afternoon
Programming
May 2025
Complete
Afternoon
May 2025
Question
Afternoon
Complete
PaperQuestion
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper Schem
& Mark
2025/2026Page
UK.EDU.OCR3GCSE
of 52 Package Deal | Complete Exam Question Papers with Marking Schemes, Foundation & Higher Tier Bundle
Page 3
3
2 This flowchart uses iteration.
Start
INPUT x
OUTPUT "OK"
x = x - 2
FALSE
IS x < 0?
TRUE
End
(a) 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]
(b) Iteration is a programming construct.
(i) Identify and describe two different examples of iteration that can be used in a high-level
language.
1 .......................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
2 .......................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
[4]
© OCR 2025 Turn over
Page 32025 3
€“1)
R GCSE
Computer
(9–1)
OCR Science
GCSE
Computer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
– Computational
J277-02
Thinking,
–Algorithms
Computational
Thinking,&Algorithms
Programming
Thinking,&Algorithms
Programming
May 2025&Afternoon
Programming
May 2025Complete
Afternoon
May 2025
Question
Complete
Afternoon
Paper
Question
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper
Scheme
& Mark
,€“1)
CR GCSE
Computer
OCR
(9–1)
Science
GCSEComputer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
–
J277-02
Computational
Thinking,
–Algorithms
Computational
Thinking,
& Programming
Algorithms
Thinking, Algorithms
& May
Programming
2025&Afternoon
Programming
May 2025
Complete
Afternoon
May 2025
Question
Afternoon
Complete
PaperQuestion
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper Schem
& Mark
2025/2026Page
UK.EDU.OCR4GCSE
of 52 Package Deal | Complete Exam Question Papers with Marking Schemes, Foundation & Higher Tier Bundle
Page 4
4
(ii) Give the names of two other programming constructs that are used in a high-level language.
1 .......................................................................................................................................................
2 .......................................................................................................................................................
[2]
(c) A programmer implements the flowchart as a program in a high-level language using an
Integrated Development Environment (IDE).
Identify and describe two tools that the programmer could use in the IDE to create a program
from the flowchart.
Tool 1 ................................................................................................................................................
Description .......................................................................................................................................
..........................................................................................................................................................
Tool 2 ................................................................................................................................................
Description .......................................................................................................................................
..........................................................................................................................................................
[4]
© OCR 2025
Page 42025 4
€“1)
R GCSE
Computer
(9–1)
OCR Science
GCSE
Computer
(9–1)
J277-02
Science
Computer
– Computational
J277-02
Science
– Computational
J277-02
Thinking,
–Algorithms
Computational
Thinking,&Algorithms
Programming
Thinking,&Algorithms
Programming
May 2025&Afternoon
Programming
May 2025Complete
Afternoon
May 2025
Question
Complete
Afternoon
Paper
Question
Complete
& Marking
Paper
Question
Scheme.pdf
& Marking
Paper
Scheme
& Mark
