Keystones — Cornerstone

Five GCSE retrieval questions · 9 July 2022 · mathsvault.uk/keystones

1. Number

7000

Answer: 7 × 10³
2. Algebra

Simplify: 2x + 5x

Answer: 7x
3. Geometry

Opposite = 12cm, hypotenuse = 24cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Find 52% of 474

Answer: 246.48
5. Statistics

Calculate the mean of: 14, 25, 20, 50, 9, 39

Answer: 26.2

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