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Cambridge IGCSE Mathematics practice

exam practice - 1. Round numbers to a specified level of precision, including decimal places and significant figures. 2. Make estimates for calculations involving numbers, quantities, and measurements, such as rounding 5764 to the nearest thousand or estimating the value of 41.3 by rounding to 1 significant figure. 3. Round results to an appropriate level of accuracy based on the context of the problem. - Estimation

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At a glance

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Topic

Estimation

Exam-style question

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Paper 2Core or Extended Mathematics1 marks

Estimating values for calculations.

Description

Estimation Example

You need to estimate the value of 41.3 for a calculation. Round it to one significant figure.

  1. a

    Calculate Round 41.3 to one significant figure.

    Aim for approximately 1 distinct marking point.

    [1]

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Maths method check

  • Topic focus: Estimation.
  • Question style: structured_mathematics.
  • Reasoning demand: reasoning.
  • Check the operation, notation, units, and final answer form against the question before moving on.

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Paper 2 structured question: Estimation

Paper 2Core or Extended Mathematics1 marks

Description

Rounding Example

You have a measurement of 5764 meters. You need to report this measurement rounded to the nearest thousand.

  1. a

    Calculate Round 5764 to the nearest thousand.

    Aim for approximately 1 distinct marking point.

    [1]