Keystones — Cornerstone

Five GCSE retrieval questions · 8 March 2022 · mathsvault.uk/keystones

1. Number

70000

Answer: 7 × 10⁴
2. Algebra

Solve: x + 6 = 12

Answer: x = 6
3. Geometry

Find the area of a circle with radius 10cm

Answer: 314.16cm²
4. Ratio

Simplify the ratio 8:32

Answer: 1:4
5. Statistics

Calculate the mean of: 9, 42, 47, 6, 9, 23

Answer: 22.7

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