Keystones — Lintel

Five GCSE retrieval questions · 11 December 2025 · mathsvault.uk/keystones

1. Number

What is the missing number: 31 + ? = 166

Answer: 135
2. Algebra

Solve: ^x⁄₈ = 1.75

Answer: x = 14
3. Geometry

Opposite = 9cm, adjacent = 14cm. Calculate the angle

Answer: 32.7°
4. Ratio

Simplify: 16:24:8

Answer: 2:3:1
5. Statistics

Find the range of: -3, 27, -10, 1, 10

Answer: 37

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.