Keystones — Bedrock

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

1. Number

Simplify: 2⁴ × 2⁴

Answer: 2⁸
2. Algebra

Simplify: 2x + 4x

Answer: 6x
3. Geometry

Opposite = 10cm, hypotenuse = 14.cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify the ratio 25:15

Answer: 5:3
5. Statistics

Find the mean of: 3, 3, 11, 16, 16

Answer: 9.8

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