Keystones — Cornerstone
Five GCSE retrieval questions · 10 February 2026 · mathsvault.uk/keystones
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1. Number Dividing fractions
Calculate: 4⁄6 ÷ 2
Answer: 1⁄3 -
2. Algebra Two-step inequalities
Solve: 2x - 6 > 11
Answer: x > 8.5 -
3. Geometry Area of a right-angled triangle
Find the area of a right triangle with base 9cm and height 8cm
Answer: 36cm² -
4. Ratio Unitary method
4 kg costs £26.80. What is the cost of 20 kg?
Answer: £134.00 -
5. Statistics Mode
Find the mode of: 15, 12, 10, 12, 10, 10
Answer: 10