Keystones — Cornerstone

Five GCSE retrieval questions · 19 June 2025 · mathsvault.uk/keystones

1. Number

790000

Answer: 7.9 × 10⁵
2. Algebra

Collect like terms: 8x + 5y + 5x + 5y

Answer: 13x + 10y
3. Geometry

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

Answer: 45° (approximately)
4. Ratio

Simplify: 4:10:4

Answer: 2:5:2
5. Statistics

Calculate the range of: 65, 87, 53, 90, 48, 43

Answer: 47

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