Keystones — Capstone
Five GCSE retrieval questions · 29 April 2026 · mathsvault.uk/keystones
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1. Number Dividing in standard form
Divide: 1.1 × 108 ÷ 8.4 × 104
Answer: 1.31 × 103 -
2. Algebra Solving non-monic quadratics
Solve: 2x² + 6x + 4 = 0
Answer: x = -1 or x = -2 -
3. Geometry SOHCAHTOA — missing angle
Adjacent = 24cm, hypotenuse = 38cm. Find the angle
Answer: 50.8° -
4. Ratio Mixed ratio problems
£225.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £125.00 -
5. Statistics Median
Find the median of: 48, 80, 79, 44, 31, 28, 61, 30, 75
Answer: 48