Keystones — Cornerstone

Five GCSE retrieval questions · 6 December 2025 · mathsvault.uk/keystones

1. Number

Calculate: 80 + 83

Answer: 80 + 83 = 163
2. Algebra

Factorise: 2x² + 5x

Answer: x(2x + 5)
3. Geometry

Opposite = 8cm, hypotenuse = 16cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Find 59% of 119

Answer: 70.21
5. Statistics

What is the probability of getting heads when flipping a fair coin?

Answer: ¹⁄₂

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.