CAIE IGCSE Mathematics Core C2.1.2 Substitution in Expressions & Formulae

Practise substituting positive or negative values into expressions with brackets, fractions and powers before evaluating accurately.

Syllabus
2028–2030
Objective
C2.1.2
Level
Core

Exam points

  • replace each variable with its given value and preserve brackets around negatives
  • evaluate powers before multiplication, division, addition and subtraction
  • substitute known values first, then solve the resulting equation for a missing variable

C2.1.2 Substitute numbers into expressions and formulas. question 1

[Maximum number: 1]

P=3 a+5
Find the value of P when a=2.

P=

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