Keystones — Lintel

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

1. Number

Calculate: 189 + 438

Answer: 189 + 438 = 627
2. Algebra

Factorise: 9x² + 5x

Answer: x(9x + 5)
3. Geometry

Opposite = 9cm, adjacent = 11cm. Calculate the angle

Answer: 39.3°
4. Ratio

Simplify: 12:9:9

Answer: 4:3:3
5. Statistics

A spinner has 2 red, 3 blue and 5 green sections. Probability of landing on red?

Answer: ¹⁄₅

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.