Keystones — Capstone
Five GCSE retrieval questions · 29 July 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 93. What are the numbers?
Answer: 30, 31, and 32 -
2. Algebra
Factorise fully: 20x² + 20x
Answer: 5x(4x + 4) -
3. Geometry
A right triangle has hypotenuse 5cm and one side 3cm. Find its area
Answer: 6cm² -
4. Ratio
Calculate 47% of 493
Answer: 231.71 -
5. Statistics
A spinner has 6 red, 3 blue and 6 green sections. Probability of landing on red?
Answer: 2⁄5