Keystones — Cornerstone
Five GCSE retrieval questions · 12 April 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 632 + 365
Answer: 632 + 365 = 997 -
2. Algebra
Factorise: 40x + 40
Answer: 5(8x + 8) -
3. Geometry
Calculate perimeter: two sides are 9cm and 8cm at right angles
Answer: 29cm -
4. Ratio
Simplify: 20:20:8
Answer: 5:5:2 -
5. Statistics
Calculate the range of: 64, 76, 32, 87, 97, 88
Answer: 65