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GCSE Mathematics · key term
Digits that communicate the precision of a number, counted from its first non-zero digit.
Used by OCR
Specification 4.01a · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
Revise: Rounding AccuracyThe instruction tells you the required degree of accuracy. This might be a place value, such as the nearest ten; a number of decimal places; or a number of significant figures.
Read the required accuracy carefully: nearest hundred, 2 decimal places and 2 significant figures are different instructions.
When rounding to significant figures, begin counting at the first non-zero digit.
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