Keystones — Bedrock

Five GCSE retrieval questions · 30 July 2025 · mathsvault.uk/keystones

1. Number

Simplify: 2⁴ × 2⁵

Answer: 2⁹
2. Algebra

Simplify: 4x + 8x

Answer: 12x
3. Geometry

Opposite = 9cm, hypotenuse = 10.4cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 18:15

Answer: 6:5
5. Statistics

Find the range of: 22, 41, 19, 21, 19

Answer: 22

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