Keystones — Cornerstone

Five GCSE retrieval questions · 13 August 2025 · mathsvault.uk/keystones

1. Number

Calculate: ³⁄₁₀ + ⁴⁄₁₀

Answer: ⁷⁄₁₀
2. Algebra

Solve: 6x - 9 = 3x + 9

Answer: x = 6
3. Geometry

Opposite = 6cm, hypotenuse = 6.9cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify: 16:8:12

Answer: 4:2:3
5. Statistics

Calculate the range of: 32, 55, 23, 81, 46, 29

Answer: 58

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.