Keystones — Capstone
Five GCSE retrieval questions · 10 March 2026 · mathsvault.uk/keystones
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1. Number Dividing in standard form
Divide: 4.7 × 107 ÷ 5.6 × 105
Answer: 8.39 × 101 -
2. Algebra Solving non-monic quadratics
Solve: 2x² + 16x + 32 = 0
Answer: x = -4 or x = -4 -
3. Geometry SOHCAHTOA — missing angle
Adjacent = 13cm, hypotenuse = 27cm. Find the angle
Answer: 61.2° -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Median
Find the median of: 41, 75, 66, 29, 29, 32, 56, 80, 72
Answer: 56