Keystones — Cornerstone

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

1. Number

Add: ⁵⁄₆ + ³⁄₅

Answer: ⁴³⁄₃₀
2. Algebra

Expand: 6(x + 6)

Answer: 6x + 36
3. Geometry

Opposite = 8cm, adjacent = 16cm. Calculate the angle

Answer: 26.6°
4. Ratio

Simplify: 4:6:6

Answer: 2:3:3
5. Statistics

Find the mean of: 16, 13, 15

Answer: 14.666666666667

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