Keystones — Cornerstone

Five GCSE retrieval questions · 16 September 2025 · mathsvault.uk/keystones

1. Number

Calculate: ²⁄₅ + ²⁄₅

Answer: ⁴⁄₅
2. Algebra

Collect like terms: 8x + 5y + 7x + 2y

Answer: 15x + 7y
3. Geometry

Find the area of a circle with radius 10cm

Answer: 314.16cm²
4. Ratio

Simplify: 15:12:9

Answer: 5:4:3
5. Statistics

Calculate the mean of: 32, 34, 37, 23, 25, 45

Answer: 32.7

Same five questions for everyone on Cornerstone on this date. Sets are stored as JSON for reliable print-on-demand — sign in for school-branded PDFs.