Keystones — Cornerstone

Five GCSE retrieval questions · 7 February 2025 · mathsvault.uk/keystones

1. Number

Calculate: 53 + 70

Answer: 53 + 70 = 123
2. Algebra

Solve: x + 11 = 22

Answer: x = 11
3. Geometry

Opposite = 5cm, hypotenuse = 7.cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Find 52% of 500

Answer: 260
5. Statistics

A bag has 7 red and 4 blue balls. What is the probability of picking a red ball?

Answer: ⁷⁄₁₁

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.