Keystones — Cornerstone

Five GCSE retrieval questions · 17 February 2026 · mathsvault.uk/keystones

1. Number

Calculate: ²⁄₁₀ + ⁶⁄₁₀

Answer: ⁴⁄₅
2. Algebra

Factorise: 5x² + 7x

Answer: x(5x + 7)
3. Geometry

Opposite = 13cm, adjacent = 12cm. Calculate the angle

Answer: 47.3°
4. Ratio

Simplify: 20:8:8

Answer: 5:2:2
5. Statistics

What is the probability of rolling a 1 on a fair die?

Answer: ¹⁄₆

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.