Keystones — Bedrock

Five GCSE retrieval questions · 4 March 2026 · mathsvault.uk/keystones

1. Number

Simplify: 8² × 8⁵

Answer: 8⁷
2. Algebra

Expand: 8(x + 8)

Answer: 8x + 64
3. Geometry

Opposite = 7cm, hypotenuse = 9.9cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Calculate 25% of 106

Answer: 26.5
5. Statistics

Find the range of: 25, 10, 26, 12, 20

Answer: 16

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