Keystones — Lintel
Five GCSE retrieval questions · 1 July 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 34 + (-33)
Answer: 1 -
2. Algebra
Factorise: 9x² + 2x
Answer: x(9x + 2) -
3. Geometry
A right triangle has hypotenuse 10cm and one side 6cm. Find its area
Answer: 24cm² -
4. Ratio
Find 38% of 365
Answer: 138.7 -
5. Statistics
A spinner has 4 red, 5 blue and 2 green sections. Probability of landing on red?
Answer: 4⁄11