Keystones — Capstone

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

1. Number

Simplify: √8 + √18

Answer: 2√2 + 3√2 = 5√2
2. Algebra

Solve: ^x⁄₆ = 4.8333333333333

Answer: x = 29
3. Geometry

Find c if a = 19cm and b = 16cm in a right triangle

Answer: 24.8cm
4. Ratio

Simplify the ratio 8m:800cm

Answer: 1:100
5. Statistics

A spinner has 6 red, 3 blue and 3 green sections. Probability of landing on red?

Answer: ¹⁄₂

Same five questions for everyone on Capstone on this date. Sets are stored as JSON for reliable print-on-demand — sign in for school-branded PDFs.