Keystones — Cornerstone

Five GCSE retrieval questions · 20 September 2023 · mathsvault.uk/keystones

1. Number

2000

Answer: 2 × 10³
2. Algebra

Find the next term: 7, 16, 25, 34, ...

Answer: 43
3. Geometry

Opposite = 20cm, adjacent = 9cm. Calculate the angle

Answer: 65.8°
4. Ratio

Simplify: 12:4:8

Answer: 3:1:2
5. Statistics

Find the mean of: 15, 5, 7

Answer: 9

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