Keystones — Lintel
Five GCSE retrieval questions · 8 June 2025 · mathsvault.uk/keystones
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1. Number
Simplify: 10√2 - 3√2
Answer: 7√2 -
2. Algebra
Solve: 6x = 72
Answer: x = 12 -
3. Geometry
A circle has area 201.cm². Find its radius (dp)
Answer: 8cm -
4. Ratio
Calculate 12.6% of 657
Answer: 82.78 -
5. Statistics
Calculate the mean of: 31, 18, 24, 39, 45, 15, 26
Answer: 28.3