Keystones — Cornerstone

Five GCSE retrieval questions · 6 April 2022 · mathsvault.uk/keystones

1. Number

40000

Answer: 4 × 10⁴
2. Algebra

Solve: x + 11 = 20

Answer: x = 9
3. Geometry

Calculate the hypotenuse when a = 8cm and b = 5cm

Answer: 9.43cm
4. Ratio

Simplify the ratio 12:16

Answer: 3:4
5. Statistics

Calculate the mean of: 46, 7, 40, 8, 43, 44, 23

Answer: 30.1

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