Keystones — Capstone
Five GCSE retrieval questions · 24 January 2026 · mathsvault.uk/keystones
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1. Number Dividing in standard form
Divide: 4.2 × 106 ÷ 2.7 × 104
Answer: 1.56 × 102 -
2. Algebra Solving non-monic quadratics
Solve: 6x² + 11x + 3 = 0
Answer: x = -1⁄2 or x = -1 -
3. Geometry Sohcahtoa — missing angle
Adjacent = 26cm, hypotenuse = 42cm. Find the angle
Answer: 51.8° -
4. Ratio Mixed ratio problems
£400.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £150.00 -
5. Statistics Median
Find the median of: 31, 33, 69, 73, 65, 55, 55, 47, 27, 64, 79
Answer: 55