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Maths

Stretch Grammar – Percentage Increase & Decrease

Stretch (universal 11+): increase or decrease an amount by a percentage, and find a percentage change.

MathsAge 11+25 minutes

What this topic covers

  • Increase or decrease an amount by a percentage (find the percentage, then add or subtract).
  • Use a multiplier (× 1.2 for +20%, × 0.85 for −15%).
  • Find the percentage change from an original and a new amount.

Core concept summaries

Key ConceptsIncrease and DecreaseMultipliersPercentage Change; the Wrong-Base 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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