Keystones — Cornerstone
Five GCSE retrieval questions · 10 June 2026 · mathsvault.uk/keystones
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1. Number Multiplying fractions
Calculate: 1⁄10 × 2
Answer: 1⁄5 -
2. Algebra Expanding single brackets
Expand: 9(x + 6)
Answer: 9x + 54 -
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
A and B share in ratio 5:1. If the difference is 88, what does A get?
Answer: 110 -
5. Statistics Range
Find the range of: 21, 24, 33, 26, 11
Answer: 22