Keystones — Capstone
Five GCSE retrieval questions · 11 March 2026 · mathsvault.uk/keystones
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1. Number Dividing in standard form
Divide: 4.6 × 108 ÷ 5.3 × 105
Answer: 8.68 × 102 -
2. Algebra Solving non-monic quadratics
Solve: 2x² + 12x + 16 = 0
Answer: x = -2 or x = -4 -
3. Geometry SOHCAHTOA — missing angle
Adjacent = 16cm, hypotenuse = 31cm. Find the angle
Answer: 58.9° -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Median
Find the median of: 67, 23, 69, 62, 68, 27, 63, 42, 30
Answer: 62