Keystones — Capstone
Five GCSE retrieval questions · 25 April 2026 · mathsvault.uk/keystones
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1. Number
Three lengths are 4.9m, 4.31m and 4.02m. What is their total length?
Answer: 13.23m -
2. Algebra
Complete the square: x² + 4.2x
Answer: (x + 2.1)² - 4.41 -
3. Geometry
Adjacent = 23cm, hypotenuse = 37cm. Find the angle
Answer: 51.6° -
4. Ratio
Calculate 21.3% of 338
Answer: 71.99 -
5. Statistics
A spinner has 5 red, 4 blue and 4 green sections. Probability of landing on red?
Answer: 5⁄13