Keystones — Cornerstone

Five GCSE retrieval questions · 8 April 2025 · mathsvault.uk/keystones

1. Number

Add: ²⁄₇ + ¹⁄₃

Answer: ¹³⁄₂₁
2. Algebra

Simplify: 4x + 5x

Answer: 9x
3. Geometry

Opposite = 9cm, hypotenuse = 10.4cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 12:15

Answer: 4:5
5. Statistics

Find the mean of: 13, 15, 8, 17, 10

Answer: 12.6

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.