GCSE Maths (Edexcel)

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Subtracting Limits of Accuracy

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Number Measures and Accuracy

Subtracting Limits of Accuracy

4:19 Limits of Accuracy Calculations
Spec N16
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  • When subtracting two measurements, the limits of accuracy for the result depend on the bounds of the original measurements.
  • The smallest possible difference is obtained by subtracting the maximum value of one measurement from the minimum value of the other measurement.
  • The largest possible difference is obtained by subtracting the minimum value of one measurement from the maximum value of the other measurement.
  • In the example given, the smallest possible difference in speed between the two cars is 5 miles per hour, and the largest possible difference is 15 miles per hour.

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