Keystones — Cornerstone

Five GCSE retrieval questions · 23 August 2024 · mathsvault.uk/keystones

1. Number

1200000

Answer: 1.2 × 10⁶
2. Algebra

Simplify: 8x + 2x

Answer: 10x
3. Geometry

Find the hypotenuse of a right triangle with sides 3cm and 4cm

Answer: 5cm
4. Ratio

Simplify the ratio 30:15

Answer: 2:1
5. Statistics

Find the mean of: 7, 14, 19, 15

Answer: 13.75

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