Keystones — Lintel
Five GCSE retrieval questions · 7 November 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 864 + 957
Answer: 864 + 957 = 1821 -
2. Algebra
Solve: x⁄3 = 2
Answer: x = 6 -
3. Geometry
Calculate the area of a circle with diameter 15cm
Answer: 176.71cm² -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
Find the range of: 21, 12, 12, 25, -15
Answer: 40