Significant figures
What Significant figures means in Mathematics GCSE, as defined for AQA, Pearson Edexcel.
Definitions of Significant figures
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Reference: Pearson Edexcel
Counted from the first non-zero digit, so the zeros at the front never count.
The digits counted from the first non-zero digit when expressing the accuracy of a number, including relevant zeros after that digit.
Digits counted from the first non-zero digit when expressing a number to a specified precision.
Topics that use Significant figures
- Structure and calculation (AQA GCSE)
- Geometry and measures - Mensuration and calculation (Pearson Edexcel GCSE)
- Number - Measures and accuracy (Pearson Edexcel GCSE)
Related terms
- Exact value
- Significant Figure
- Surd
- Arc
- arc length
- area and volume units
- area of a segment
- calculating with bounds
Using Significant figures in the exam
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