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Cambridge IGCSE Mathematics practice

exam practice - Round numbers to a specified level of precision, including both decimal places and significant figures. For example, express 5764 rounded to the nearest thousand. Make estimations for calculations that involve numbers, quantities, and measurements, such as estimating the value of 41.3 by rounding each number to 1 significant figure. Round results to an appropriate level of accuracy based on the context of the problem, like rounding 9.79 and 0.765. - Estimation

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Topic

Estimation

Exam-style question

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Paper 2Core or Extended Mathematics1 marks

Estimation Example

Description

Estimating Values

Estimate the following values by rounding to one significant figure.

  1. a

    Calculate Estimate 41.3 by rounding to one significant figure.

    Aim for approximately 1 distinct marking point.

    [1]

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  • 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 Numbers

Round the following numbers to the specified level of precision.

  1. a

    Calculate Round 5764 to the nearest thousand.

    Aim for approximately 1 distinct marking point.

    [1]