Keystones — Cornerstone

Five GCSE retrieval questions · 18 May 2023 · mathsvault.uk/keystones

1. Number

84000000

Answer: 8.4 × 10⁷
2. Algebra

Factorise: 6x² + 4x

Answer: 2x(3x + 2)
3. Geometry

Opposite = 7cm, hypotenuse = 9.9cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Calculate 50% of 115

Answer: 57.5
5. Statistics

Find the range of: 25, 18, 7, 14, 12

Answer: 18

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