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Cambridge IGCSE Computer Science practice

Paper 1 structured question: Number systems

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Attempt questionNumber systems revisionRevise the key idea

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Number systems

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Paper 1Computer Systems3 marks

Understanding conversions between number systems is crucial.

Description

Hexadecimal Conversion

Convert the hexadecimal number A3 to denary and binary.

  1. a

    Explain how to convert A3 from hexadecimal to denary.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 1 structured question: Number systems

Paper 1Computer Systems1 marks

Description

Number System Conversion

Convert the following denary numbers to binary and hexadecimal: 10, 255.

  1. a

    State the binary equivalent of 10.

    Aim for approximately 1 distinct marking point.

    [1]