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Unsigned and two’s complement integers: Edexcel GCSE Computer Science questions

Every Edexcel GCSE Computer Science exam question on 2.1.2 Unsigned and two’s complement integers, 2022–2025, with its mark scheme and examiner’s report.

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210 questions

  1. Q1(d)(iii)

    June 2025 · Paper 1

    2 marks2.1.2 Unsigned and two’s complement integers2.1.3 Converting denary and binary
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  2. Q2(d)(iv)

    June 2024 · Paper 1

    2 marks2.1.2 Unsigned and two’s complement integers
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  3. Q3(a)(iii)

    June 2022 · Paper 1

    2 marks2.1.2 Unsigned and two’s complement integers
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  4. Q1(c)(i)

    Specimen · Paper 1

    1 mark2.1.2 Unsigned and two’s complement integers
    The whole paper ↗
    Your answer
All 4 questions on Unsigned and two’s complement integers, as a list
  1. June 2025, Paper 1, Q1(d)(iii) (2 marks): Convert the denary number –13 to 8-bit binary using two’s complement. (2)
  2. June 2024, Paper 1, Q2(d)(iv) (2 marks): Give the 8‑bit binary two’s complement representation of denary –73 (2)
  3. June 2022, Paper 1, Q3(a)(iii) (2 marks): Describe the process of converting a binary number to two’s complement. (2)
  4. Specimen, Paper 1, Q1(c)(i) (1 mark): Identify the reason why an unsigned integer should be used to record the number of cars entering the car park, rather than a signed integer. (1) A Unsigned inte

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