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Number bases exam tips

Study Number bases with curriculum-aligned Exam Tips resources, practice links, and exam-focused support.

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Number bases

AqaA LevelComputer ScienceFundamentals of data representation

Exam tips

Label the base clearly
Write the base as a subscript whenever you give or use a number, such as 1011₂, 11₁₀ or B₁₆.
The same sequence of symbols can represent different values in different bases, so the subscript makes the meaning unambiguous.