Keystones — Capstone
Five GCSE retrieval questions · 2 May 2026 · mathsvault.uk/keystones
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1. Number Dividing in standard form
Divide: 3.4 × 108 ÷ 5.9 × 105
Answer: 5.76 × 102 -
2. Algebra Solving non-monic quadratics
Solve: 2x² + 4x + 2 = 0
Answer: x = -1 or x = -1 -
3. Geometry SOHCAHTOA — missing angle
Adjacent = 26cm, hypotenuse = 44cm. Find the angle
Answer: 53.8° -
4. Ratio Mixed ratio problems
In ratio 3:3:4, what fraction is the second part?
Answer: 3⁄10 -
5. Statistics Median
Find the median of: 28, 38, 25, 51, 71, 75, 79, 38, 62, 43, 80
Answer: 51