Keystones — Lintel

Five GCSE retrieval questions · 22 March 2026 · mathsvault.uk/keystones

1. Number

Calculate: 999 + 849

Answer: 1848
2. Algebra

Factorise fully: 25x² + 30x

Answer: 5x(5x + 6)
3. Geometry

Adjacent = 24cm, hypotenuse = 33cm. Find the angle

Answer: 43.3°
4. Ratio

Simplify the ratio 2m:200cm

Answer: 1:100
5. Statistics

A spinner has 5 red, 5 blue and 5 green sections. Probability of landing on red?

Answer: ¹⁄₃

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.