Keystones — Lintel

Five GCSE retrieval questions · 23 July 2025 · mathsvault.uk/keystones

1. Number

Calculate: -2 + (3) + (0)

Answer: 1
2. Algebra

Solve: ^x⁄₇ = 4.5714285714286

Answer: x = 32
3. Geometry

Opposite = 10cm, adjacent = 17cm. Calculate the angle

Answer: 30.5°
4. Ratio

Calculate 12.2% of 545

Answer: 66.49
5. Statistics

A bag has 7 red and 6 blue balls. What is the probability of picking a red ball?

Answer: ⁷⁄₁₃

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