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2024 AQA GCSE COMPUTER SCIENCE 8525/1B Paper 1
Computational thinking and programming skills – Python
Verified Question Paper with Marking Scheme Combined.
June 2024
Materials
- There are no additional materials required for this paper.
- You must not use a calculator.
Instructions
- Use black ink or black ball-point pen. Use pencil only for drawing.
- Answer all questions.
- You must answer the questions in the spaces provided.
- If you need extra space for your answer(s), use the lined pages at the end of this
book. Write the question number against your answer(s).
- Do all rough work in this book. Cross through any work you do not want to be
marked.
- Questions that require a coded solution must be answered in Python.
- You should assume that all indexing in code starts at 0 unless stated otherwise.
Information
The total number of marks available for this paper is 90.
Advice
For Examiner’s Use
Question Mark
1
2 – 3
4 – 5
6 – 7
8 – 9
10 – 11
12
13 – 14
15
TOTAL
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Answer all questions.
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Figure 1 shows an algorithm, represented using pseudo-code.
The algorithm assigns different values to two variables, then asks the user to input a
letter.
Figure 1
film "Godzilla vs. Kong"
year 2021
OUTPUT "Please guess a letter"
letter USERINPUT
Which pseudo-code statement assigns the length of the string filmto a variable called value?
Shade one lozenge.
[1 mark]
A
film LEN(value)
B film film + value
C value film
D value LEN(film)
The POSITIONsubroutine returns the position of the first occurrence of a character in a
string.
For example:
- POSITION("Godzilla vs. Kong", "o")would return 1
- POSITION("Godzilla vs. Kong", "z")would return 3 letterand filmare
variables used in the algorithm in Figure 1.
Complete the pseudo-code statement to find the position of the first occurrence of the
contents of letterin filmand store this position in the variable location
You must use the POSITIONsubroutine in your answer.
[1 mark]
location
Do not write
outside the Turn over ►
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outside the
. 5 Write a Python program that: - gets the user to enter the name of a film - displays You enteredfollowed by the name of the film entered by the user.
The output from the program must be on one line.
You should use indentation as appropriate, meaningful variable name(s) and Python
syntax in your answer.
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The answer grid below contains vertical lines to help you indent your code
accurately.
[2 marks]
Do not write
outside the
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Do not write
outside the
Figure 2 shows an algorithm, represented using pseudo-code.
- Line numbers are included but are not part of the algorithm.
Figure 2
1 num USERINPUT
2 IF NOT(num > 1) OR num > 20 THEN
3 OUTPUT "False"
4 ELSEIF num > 1 AND num < 15 THEN
5 OUTPUT "Almost"
6 ELSEIF num MOD 5 = 0 THEN
7 OUTPUT "True"
8 ELSE
9 OUTPUT "Unknown"
10 ENDIF
The modulus operator is used to calculate the remainder after dividing one integer by
another.
For example:
- 14 MOD 3 evaluates to 2
- 24 MOD 5 evaluates to 4
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. Where is a relational operator first used in the algorithm in Figure 2? Shade
one lozenge.
[1 mark]
A Line number 1
B Line number 2
C Line number 3
D Line number 6
Do not write
outside the Turn over ►
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outside the
Figure 3 shows an incomplete Python program for a number guessing game.
- Line numbers are included but are not part of the program.
Figure 3
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1 import random
3 print("Enter a number")
4 userNumber = int(input())
5 while userNumber < 1 or userNumber > 100:
6 print("Invalid number")
7 userNumber = int(input())
8 print("Valid number entered")
9 if randomNumber == userNumber:
10 print("Number guessed correctly")
The program should generate a random number between 1 and 100 (including 1 and
100). This will be the number the user has to guess.
Write the Python code that should be used on line 2 in Figure 3 to:
- generate a random number between 1 and 100 inclusive
- assign this number to the appropriate variable from the program.
You must use random.randrange(a, b) in your Python code.
random.randrange(a, b) generates a random integer in the range a to b
starting at a but finishing one before b
[2 marks]
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outside the
[1 mark]
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State the name for the process of breaking a problem down into sub-problems.
[1 mark]
Define the term abstraction.
Do not write
outside the
Figure 4 shows an algorithm, represented using pseudo-code.
The algorithm calculates the total cost of hiring a hotel for a wedding.
Figure 4
numberOfGuests USERINPUT
numberOfRooms USERINPUT
charge 25
IF numberOfGuests > 50 THEN
totalCost numberOfGuests * 2
ELSE
IF numberOfGuests ≥ 25 THEN
totalCost numberOfGuests * 4
ELSE
totalCost numberOfGuests * 5
ENDIF
ENDIF
totalCost totalCost + (numberOfRooms * 100)
IF totalCost < 1400 THEN
totalCost totalCost + charge
ENDIF
OUTPUT totalCost
Complete the table below using the algorithm in Figure 4.
[3 marks]
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Input value for
numberOfGuests
Input value for
numberOfRooms
Output
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outside the
Turn over for the next question
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A shop owner wants to create stock codes for each type of sweet they sell.
Figure 5 shows some of the sweets.
Figure 5
sweetID sweetName brand
S1 WINE GUMS MAYNARDS
S2 COLA CUBES BERRYMANS
S3 STARBURST WRIGLEY
A stock code is made up of the:
- sweetID
- first letter and the second letter in sweetName
- first letter of the brand
For example:
- the stock code for WINE GUMS would be S1WIM
- the stock code for STARBURST would be S3STW
Write a Python program to create the stock code for a sweet.
The program should:
- get the user to enter the sweetID, sweetName and brand
- create the stock code
- assign the stock code to a variable called code
You should use indentation as appropriate, meaningful variable name(s) and Python
syntax in your answer.
The answer grid below contains vertical lines to help you indent your code.
[4 marks]
Do not write
outside the
Figure 6 shows an algorithm, represented using pseudo-code.
Figure 6
days [10, 15, 4]
sales [20, 33, 12]
weeks [0, 0, 0]
FOR i 0 TO 2
daysTotal days[i] + sales[i]
weeks[i] daysTotal DIV 7
ENDFOR
weeksTotal weeks[0] + weeks[1] + weeks[2]
OUTPUT weeksTotal
The DIV operator is used for integer division.
Complete the trace table for the algorithm in Figure 6.
Part of the table has already been filled in.
You may not need to use all the rows in the table.
[6 marks]
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i daysTotal
weeks
weeksTotal
[0] [1] [2]
Do not write
outside the
Which of the following best describes a data structure?
Shade one lozenge.
[1 mark]
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A A number with a fractional part
B A value such as a whole number
C All of the data used and stored within a program
D An organised collection of values
Question 9 continues on the next page
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