OCR GCSE Biology B · J257
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Significant FiguresRounding can cause place-value changes.
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GCSE Biology · key term
Replacing a number with a nearby value containing fewer digits while keeping its size as close as required.
Used by OCR
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Significant FiguresRounding can cause place-value changes.
When rounding, inspect only the first digit being discarded: 5–9 rounds the previous digit up; 0–4 leaves it unchanged.
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