Keystones — Lintel
Five GCSE retrieval questions · 10 August 2026 · mathsvault.uk/keystones
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1. Number
0.00074
Answer: 7.4 × 10^-4 -
2. Algebra
Solve: 2x = 26
Answer: x = 13 -
3. Geometry
Calculate the area of a right triangle with perpendicular sides 8cm and 9cm
Answer: 36cm² -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 44, 24, 23, 45, 34, 15, 20, 16
Answer: 27.6