Keystones — Lintel

Five GCSE retrieval questions · 7 December 2025 · mathsvault.uk/keystones

1. Number

What is the missing number: 77 + ? = 179

Answer: 102
2. Algebra

Solve: ^x⁄₆ = 3.3333333333333

Answer: x = 20
3. Geometry

Adjacent = 25cm, hypotenuse = 39cm. Find the angle

Answer: 50.1°
4. Ratio

Find 16% of 353

Answer: 56.48
5. Statistics

A spinner has 3 red, 4 blue and 6 green sections. Probability of landing on red?

Answer: ³⁄₁₃

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.