Keystones — Cornerstone
Five GCSE retrieval questions · 22 September 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 63 + ? = 141
Answer: 78 -
2. Algebra
Find the next term: 20, 23, 26, 29, ...
Answer: 32 -
3. Geometry
Opposite = 20cm, adjacent = 16cm. Calculate the angle
Answer: 51.3° -
4. Ratio
Find 54% of 153
Answer: 82.62 -
5. Statistics
Calculate the range of: 40, 33, 56, 59, 24, 44
Answer: 35