Keystones — Capstone
Five GCSE retrieval questions · 30 April 2026 · mathsvault.uk/keystones
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1. Number Dividing in standard form
Divide: 2.8 × 108 ÷ 2.3 × 104
Answer: 1.22 × 104 -
2. Algebra Solving non-monic quadratics
Solve: 2x² + 10x + 8 = 0
Answer: x = -4 or x = -1 -
3. Geometry SOHCAHTOA — missing angle
Adjacent = 28cm, hypotenuse = 46cm. Find the angle
Answer: 52.5° -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Median
Find the median of: 36, 68, 25, 41, 75, 68, 46, 47, 34, 22, 80
Answer: 46