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GCSE Maths

Number

Finding Error Intervals

Finding Error Intervals

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Level 6–7
Foundation & Higher
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Key Points 

  • Error intervals show the range of possible values after rounding.

  • The lower bound is inclusive (≤).

  • The upper bound is exclusive (<).

  • Write intervals using inequality notation.


Keywords: error intervals, lower bound, upper bound, inequalities, GCSE maths.

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