Keystones — Cornerstone

Five GCSE retrieval questions · 13 March 2025 · mathsvault.uk/keystones

1. Number

Simplify: 2³ × 2⁴

Answer: 2⁷
2. Algebra

Solve: x + 9 = 21

Answer: x = 12
3. Geometry

Opposite = 20cm, adjacent = 9cm. Calculate the angle

Answer: 65.8°
4. Ratio

Calculate 50% of 155

Answer: 77.5
5. Statistics

Find the mean of: 7, 11, 13

Answer: 10.333333333333

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.