Keystones — Capstone
Five GCSE retrieval questions · 5 August 2026 · mathsvault.uk/keystones
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1. Number Dividing in standard form
Divide: 3.1 × 106 ÷ 5.6 × 104
Answer: 5.54 × 101 -
2. Algebra Solving non-monic quadratics
Solve: 2x² + 8x + 8 = 0
Answer: x = -2 or x = -2 -
3. Geometry SOHCAHTOA — missing angle
Adjacent = 13cm, hypotenuse = 18cm. Find the angle
Answer: 43.8° -
4. Ratio Mixed ratio problems
In ratio 4:4:3, what fraction is the second part?
Answer: 4⁄11 -
5. Statistics Median
Find the median of: 37, 73, 40, 68, 67, 51, 64, 53, 53
Answer: 53