Keystones — Cornerstone

Five GCSE retrieval questions · 4 February 2022 · mathsvault.uk/keystones

1. Number

20000000

Answer: 2 × 10⁷
2. Algebra

Factorise: 8x² + 5x

Answer: x(8x + 5)
3. Geometry

Opposite = 8cm, adjacent = 18cm. Calculate the angle

Answer: 24°
4. Ratio

Find 52% of 434

Answer: 225.68
5. Statistics

Calculate the mean of: 22, 29, 8, 34, 12, 44, 46

Answer: 27.9

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