Keystones — Cornerstone

Five GCSE retrieval questions · 20 May 2022 · mathsvault.uk/keystones

1. Number

Calculate: ⁷⁄₁₀ + ²⁄₁₀

Answer: ⁹⁄₁₀
2. Algebra

Simplify: 6x + 6x

Answer: 12x
3. Geometry

Opposite = 8cm, hypotenuse = 11.3cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Calculate 50% of 136

Answer: 68
5. Statistics

Find the mean of: 8, 7, 10, 10

Answer: 8.75

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