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CAIE IGCSE Biology 22.3.1 Numerical and Algebraic Calculations Questions

Practise applying percentages, rates, ratios, unit conversions and formula substitution to biological data, with clear working, units and appropriate rounding.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • calculate percentage increase, decrease or change using the correct denominator and stated rounding
  • derive a biological rate from a volume, gradient or count divided by time and state units
  • calculate means, ratios, proportions or absolute differences from tabulated values
  • convert units and use scale, area or density relationships to estimate a quantity
  • substitute measured quantities into a formula or direct-proportion relationship to find a total

CAIE IGCSE Biology 22.3.1 Numerical and Algebraic Calculations Questions question 1

[Maximum number: 1]

State how the student would calculate the rates of photosynthesis from the results in Table 6.1.

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