Keystones — Bedrock

Five GCSE retrieval questions · 2 February 2025 · mathsvault.uk/keystones

1. Number

Calculate: ⁷⁄₁₁ + ¹⁄₁₁

Answer: ⁸⁄₁₁
2. Algebra

Solve: x + 6 = 19

Answer: x = 13
3. Geometry

Opposite = 6cm, hypotenuse = 8.5cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify the ratio 40:15

Answer: 8:3
5. Statistics

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

Answer: ¹⁄₂

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