Keystones — Cornerstone
Five GCSE retrieval questions · 7 November 2026 · mathsvault.uk/keystones
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1. Number Multiplying fractions
Multiply: 3⁄8 × 4⁄6
Answer: 1⁄4 -
2. Algebra Expanding single brackets
Expand: 4(x + 5)
Answer: 4x + 20 -
3. Geometry Pythagoras — short side
Find b if a = 15cm and c = 25cm
Answer: 20cm -
4. Ratio Ratio given the difference
A and B share in ratio 5:4. If the difference is 34, what does A get?
Answer: 170 -
5. Statistics Range
Find the range of: 46, 46, 29, 20, 41
Answer: 26