Keystones — Cornerstone

Five GCSE retrieval questions · 20 November 2022 · mathsvault.uk/keystones

1. Number

4000

Answer: 4 × 10³
2. Algebra

What is the next term? 6, 12, 24, 48, ...

Answer: 96
3. Geometry

Find the area of a circle with radius 3cm

Answer: 28.27cm²
4. Ratio

Simplify: 12:6:15

Answer: 4:2:5
5. Statistics

Calculate the mean of: 23, 10, 46, 32, 24, 20, 22

Answer: 25.3

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