Keystones — Capstone
Five GCSE retrieval questions · 22 September 2026 · mathsvault.uk/keystones
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1. Number Dividing in standard form
Divide: 3.3 × 108 ÷ 7 × 105
Answer: 4.71 × 102 -
2. Algebra Solving non-monic quadratics
Solve: 2x² + 4x + 2 = 0
Answer: x = -1 or x = -1 -
3. Geometry SOHCAHTOA — missing angle
Adjacent = 21cm, hypotenuse = 26cm. Find the angle
Answer: 36.1° -
4. Ratio Mixed ratio problems
In ratio 3:1:4, what fraction is the second part?
Answer: 1⁄8 -
5. Statistics Median
Find the median of: 55, 29, 42, 63, 44, 23, 37, 45, 39, 62
Answer: 44