Keystones — Capstone
Five GCSE retrieval questions · 25 September 2026 · mathsvault.uk/keystones
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1. Number Dividing in standard form
Divide: 4 × 108 ÷ 3.2 × 106
Answer: 1.25 × 102 -
2. Algebra Solving non-monic quadratics
Solve: 2x² + 16x + 32 = 0
Answer: x = -4 or x = -4 -
3. Geometry SOHCAHTOA — missing angle
Adjacent = 22cm, hypotenuse = 42cm. Find the angle
Answer: 58.4° -
4. Ratio Mixed ratio problems
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics Median
Find the median of: 26, 28, 41, 43, 58, 39, 60, 76, 46, 72, 68
Answer: 46