Keystones — Lintel
Five GCSE retrieval questions · 15 March 2026 · mathsvault.uk/keystones
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1. Number
0.0043
Answer: 4.3 × 10^-3 -
2. Algebra
Solve: 8x - 12 = 3x + 38
Answer: x = 10 -
3. Geometry
Find c if a = 8cm and b = 12cm in a right triangle
Answer: 14.4cm -
4. Ratio
Calculate 48.8% of 467
Answer: 227.9 -
5. Statistics
Find the range of: 30, 30, -23, 15, 20
Answer: 53