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Cambridge IGCSE Mathematics practice

exam practice - Identify the upper and lower limits for values that have been rounded to a certain degree of accuracy, such as determining the upper limit for a length rounded to the nearest metre. Candidates do not need to calculate the limits for results derived from rounded data. - Limits of accuracy

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Limits of accuracy

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Paper 2Core or Extended Mathematics1 marks

Rounding and Limits

Description

Rounding Example

A length is measured as 15.7 cm and rounded to the nearest cm.

  1. a

    Calculate the upper limit for the rounded length.

    Aim for approximately 1 distinct marking point.

    [1]

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  • Topic focus: Limits of accuracy.
  • Question style: structured_mathematics.
  • Reasoning demand: reasoning.
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Paper 2 structured question: Limits of accuracy

Paper 2Core or Extended Mathematics1 marks

Description

Rounding Example

A length is measured as 22.4 m and rounded to the nearest metre.

  1. a

    Calculate the lower limit for the rounded length.

    Aim for approximately 1 distinct marking point.

    [1]