Keystones — Bedrock

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

1. Number

Calculate: ⁶⁄₉ + ²⁄₉

Answer: ⁸⁄₉
2. Algebra

Simplify: 8x + 9x

Answer: 17x
3. Geometry

Opposite = 5cm, hypotenuse = 5.8cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 40:25

Answer: 8:5
5. Statistics

What is the probability of getting heads when flipping a fair coin?

Answer: ¹⁄₂

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