Keystones — Lintel

Five GCSE retrieval questions · 30 March 2026 · mathsvault.uk/keystones

1. Number

Find the total of 151, 195, and 84

Answer: 430
2. Algebra

Solve: ^x⁄₈ = 2.625

Answer: x = 21
3. Geometry

Adjacent = 21cm, hypotenuse = 36cm. Find the angle

Answer: 54.3°
4. Ratio

Simplify: 10:4:8

Answer: 5:2:4
5. Statistics

A bag has 4 red and 3 blue balls. What is the probability of picking a red ball?

Answer: ⁴⁄₇

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