Keystones — Capstone
Five GCSE retrieval questions · 8 April 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 90. What are the numbers?
Answer: 29, 30, and 31 -
2. Algebra
Factorise fully: 24x² + 8x
Answer: 4x(6x + 2) -
3. Geometry
Adjacent = 17cm, hypotenuse = 22cm. Find the angle
Answer: 39.4° -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
A spinner has 3 red, 3 blue and 3 green sections. Probability of landing on red?
Answer: 1⁄3