Keystones — Cornerstone
Five GCSE retrieval questions · 26 August 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 36 + 21
Answer: 36 + 21 = 57 -
2. Algebra
Collect like terms: 4x + 8y + 8x + 6y
Answer: 12x + 14y -
3. Geometry
Opposite = 11cm, hypotenuse = 12.7cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Find 83% of 402
Answer: 333.66 -
5. Statistics
Find the mean of: 8, 8, 16, 12
Answer: 11