Keystones — Lintel

Five GCSE retrieval questions · 28 February 2025 · mathsvault.uk/keystones

1. Number

940000

Answer: 9.4 × 10⁵
2. Algebra

Find the next term: 1, 4, 10, 19, ...

Answer: 31
3. Geometry

Calculate the area of a circle with diameter 18cm

Answer: 254.47cm²
4. Ratio

Simplify: 9:6:12

Answer: 3:2:4
5. Statistics

Calculate the mean of: 35, 8, 47, 49, 18, 16, 31

Answer: 29.1

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