Keystones — Lintel
Five GCSE retrieval questions · 11 June 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 775 + 412
Answer: 775 + 412 = 1187 -
2. Algebra
Solve: 6x = 42
Answer: x = 7 -
3. Geometry
Calculate perimeter: two sides are 11cm and 14cm at right angles
Answer: 42.8cm -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 43, 18, 13, 31, 20, 14, 43
Answer: 26