Edexcel IGCSE Biology Past Papers: Calculations
Calculations in Edexcel IGCSE biology past papers include magnification, actual size, percentage change, and means from data. Show working and units (mm, µm, %). Hub: biology past papers.
High-frequency types
| Calculation | Tip |
|---|---|
| Magnification | Formula on spec; convert units |
| Percentage change | Show denominator |
| Mean | From table values |
Drill from five past papers; mark strictly. 4BI1.
Frequently asked questions
Calculator allowed?
Typically yes for 4BI1 — confirm specification.
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