Keystones — Lintel
Five GCSE retrieval questions · 19 August 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 994 + 765
Answer: 1759 -
2. Algebra
Solve: x⁄4 = 5
Answer: x = 20 -
3. Geometry
Calculate perimeter: two sides are 10cm and 12cm at right angles
Answer: 37.6cm -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
A spinner has 6 red, 4 blue and 3 green sections. Probability of landing on red?
Answer: 6⁄13