Keystones — Cornerstone

Five GCSE retrieval questions · 2 August 2022 · mathsvault.uk/keystones

1. Number

60000

Answer: 6 × 10⁴
2. Algebra

Solve: x + 5 = 20

Answer: x = 15
3. Geometry

Calculate the area of a circle with diameter 14cm

Answer: 153.94cm²
4. Ratio

Calculate 50% of 100

Answer: 50
5. Statistics

Find the mean of: 16, 17, 12, 8, 5

Answer: 11.6

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