Keystones — Bedrock

Five GCSE retrieval questions · 30 June 2025 · mathsvault.uk/keystones

1. Number

Simplify: 4⁵ × 4⁵

Answer: 4¹⁰
2. Algebra

Find the next term: 8, 16, 24, 32, ...

Answer: 40
3. Geometry

Opposite = 9cm, hypotenuse = 10.4cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 40:15

Answer: 8:3
5. Statistics

Find the mean of: 12, 9, 15, 4

Answer: 10

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