Keystones — Lintel

Five GCSE retrieval questions · 23 June 2025 · mathsvault.uk/keystones

1. Number

Simplify: 8√2 - 5√2

Answer: 3√2
2. Algebra

Factorise: 3x² + 5x

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

Opposite = 17cm, adjacent = 8cm. Calculate the angle

Answer: 64.8°
4. Ratio

Simplify: 12:12:6

Answer: 2:2:1
5. Statistics

A bag has 5 red and 6 blue balls. What is the probability of picking a red ball?

Answer: ⁵⁄₁₁

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