Keystones — Bedrock

Five GCSE retrieval questions · 16 July 2022 · mathsvault.uk/keystones

1. Number

300000

Answer: 3 × 10⁵
2. Algebra

Simplify: 7x + 8x

Answer: 15x
3. Geometry

Opposite = 15cm, hypotenuse = 21.2cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Calculate 25% of 96

Answer: 24
5. Statistics

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

Answer: ¹⁄₂

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