Keystones — Cornerstone
Five GCSE retrieval questions · 12 June 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 89 + 26
Answer: 89 + 26 = 115 -
2. Algebra
Expand: 4(2x + 2)
Answer: 8x + 8 -
3. Geometry
Calculate the area of a right triangle with perpendicular sides 6cm and 9cm
Answer: 27cm² -
4. Ratio
Simplify the ratio 16:32
Answer: 1:2 -
5. Statistics
What is the probability of getting heads when flipping a fair coin?
Answer: 1⁄2