Keystones — Cornerstone
Five GCSE retrieval questions · 10 June 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 51 + 20
Answer: 51 + 20 = 71 -
2. Algebra
Simplify: 4x + 2x
Answer: 6x -
3. Geometry
Calculate the area of a right triangle with perpendicular sides 6cm and 13cm
Answer: 39cm² -
4. Ratio
Calculate 25% of 75
Answer: 18.75 -
5. Statistics
Calculate the range of: 80, 50, 85, 57, 87, 54
Answer: 37