Keystones — Cornerstone
Five GCSE retrieval questions · 14 January 2026 · mathsvault.uk/keystones
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1. Number Multiplying fractions
Calculate: 2⁄4 × 4
Answer: 2 -
2. Algebra Expanding single brackets
Expand: 4(2x + 8)
Answer: 8x + 32 -
3. Geometry Pythagoras — short side
In a right triangle, if c = 13cm and a = 5cm, find b
Answer: 12cm -
4. Ratio Ratio given the difference
In ratio 5:1, the difference between shares is 104. What are the shares?
Answer: 130 and 26 -
5. Statistics Range
Find the range of: 38, 17, 8, 29, 16
Answer: 30