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Units and file size calculations: Edexcel GCSE Computer Science questions

Every Edexcel GCSE Computer Science exam question on 2.3.1 Units and file size calculations, 2022–2025, with its mark scheme and examiner’s report.

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210 questions

  1. Q1(a)(i)

    June 2025 · Paper 1

    1 mark2.3.1 Units and file size calculations
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    Your answer

  2. Q1(c)(ii)

    June 2025 · Paper 1

    3 marks2.3.1 Units and file size calculations2.2.2 Bitmap images
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  3. Q2(f)

    June 2024 · Paper 1

    2 marks2.3.1 Units and file size calculations
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  4. Q5(e)(ii)

    June 2023 · Paper 1

    3 marks2.3.1 Units and file size calculations
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  5. Q3(d)(ii)

    June 2022 · Paper 1

    4 marks2.3.1 Units and file size calculations2.2.2 Bitmap images
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  6. Q1(a)

    Specimen · Paper 1

    1 mark2.3.1 Units and file size calculations
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    Your answer

  7. Q1(c)(ii)

    Specimen · Paper 1

    3 marks2.3.1 Units and file size calculations
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  8. Q1(h)

    Specimen · Paper 1

    4 marks2.3.1 Units and file size calculations2.2.2 Bitmap images
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All 8 questions on Units and file size calculations, as a list
  1. June 2025, Paper 1, Q1(a)(i) (1 mark): Identify the largest unit of measurement. (1) A Gibibyte B Kibibyte C Mebibyte D Nibble
  2. June 2025, Paper 1, Q1(c)(ii) (3 marks): An image is 315 pixels wide, 923 pixels high and has a colour depth of 7 bits. Complete the expression to show the minimum file size in bytes. You do not have t
  3. June 2024, Paper 1, Q2(f) (2 marks): Construct an expression to convert 40 681 930 227 712 bytes to tebibytes. (2)
  4. June 2023, Paper 1, Q5(e)(ii) (3 marks): A file format uses a 100 × 600 table of 32‑bit integers. The file uses 1 kibibyte of additional data. Construct an expression to show the number of bytes of sto
  5. June 2022, Paper 1, Q3(d)(ii) (4 marks): A 10-colour bitmap image uses 15-bit colour depth. The image is 1028 pixels wide and 640 pixels high. Complete the expression to show the minimum file size for
  6. Specimen, Paper 1, Q1(a) (1 mark): Identify the smallest unit of measurement. (1) A bit B byte C kibibyte D nibble
  7. Specimen, Paper 1, Q1(c)(ii) (3 marks): The system stores images of car number plates. Construct an expression to show how many bytes there are in 6 tebibytes. You do not need to carry out the calcula
  8. Specimen, Paper 1, Q1(h) (4 marks): An image uses a 12-bit colour depth. It is 64 pixels wide and 48 pixels high. Construct an expression to calculate the file size of the image in MiB. You do not

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