Keystones — Cornerstone

Five GCSE retrieval questions · 19 January 2025 · mathsvault.uk/keystones

1. Number

Calculate: 27 + 58

Answer: 27 + 58 = 85
2. Algebra

Factorise: 8x + 20

Answer: 4(2x + 5)
3. Geometry

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

Answer: 30° (approximately)
4. Ratio

Simplify: 15:15:12

Answer: 5:5:4
5. Statistics

What is the probability of rolling a 4 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.