Keystones — Cornerstone

Five GCSE retrieval questions · 15 November 2025 · mathsvault.uk/keystones

1. Number

Calculate: ⁷⁄₁₀ + ²⁄₁₀

Answer: ⁹⁄₁₀
2. Algebra

Simplify: 2x + 4x

Answer: 6x
3. Geometry

Opposite = 14cm, hypotenuse = 28cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Find 55% of 79

Answer: 43.45
5. Statistics

What is the probability of rolling a 6 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.