Maths

Letters for Unknowns (expressions)

Express missing number problems algebraically, using letters for unknowns and writing expressions.

MathsAge 11+25 minutes

What this topic covers

  • Write an expression from words ('a number plus 5' → n + 5; 'double a number' → 2n).
  • Read an expression back into words.
  • Distinguish an expression (no equals) from an equation.

Core concept summaries

Key ConceptsFrom Words to SymbolsFrom Symbols to WordsExpression vs Equation; the Order Trap

Practice formats pupils may meet

NeurofiED uses varied practice to help pupils apply the idea actively, check understanding and build confidence over time.

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