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Converting denary and binary: Edexcel GCSE Computer Science questions

Every Edexcel GCSE Computer Science exam question on 2.1.3 Converting denary and binary, 2022–2025, with its mark scheme and examiner’s report.

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210 questions

  1. Q1(d)(ii)

    June 2025 · Paper 1

    2 marks2.1.3 Converting denary and binary
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  2. Q1(d)(iii)

    June 2025 · Paper 1

    2 marks2.1.2 Unsigned and two’s complement integers2.1.3 Converting denary and binary
    The whole paper ↗

  3. Q2(d)(iii)

    June 2024 · Paper 1

    2 marks2.1.3 Converting denary and binary
    The whole paper ↗

  4. Q5(d)(i)

    June 2023 · Paper 1

    1 mark2.1.3 Converting denary and binary
    The whole paper ↗

  5. Q3(a)(i)

    June 2022 · Paper 1

    2 marks2.1.3 Converting denary and binary
    The whole paper ↗

  6. Q1(e)

    Specimen · Paper 1

    2 marks2.1.3 Converting denary and binary
    The whole paper ↗
All 6 questions on Converting denary and binary, as a list
  1. June 2025, Paper 1, Q1(d)(ii) (2 marks): Convert the denary number 25 to 8-bit binary. (2)
  2. June 2025, Paper 1, Q1(d)(iii) (2 marks): Convert the denary number –13 to 8-bit binary using two’s complement. (2)
  3. June 2024, Paper 1, Q2(d)(iii) (2 marks): Convert the denary value +112 to 8‑bit binary representation. (2)
  4. June 2023, Paper 1, Q5(d)(i) (1 mark): Convert the binary pattern 0100 0010 to denary. (1)
  5. June 2022, Paper 1, Q3(a)(i) (2 marks): Convert the denary number 57 to 8-bit binary. (2)
  6. Specimen, Paper 1, Q1(e) (2 marks): Give the 8-bit binary representation of the denary number 82. (2)

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