Keystones — Cornerstone
Five GCSE retrieval questions · 17 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 44 + 56
Answer: 44 + 56 = 100 -
2. Algebra
Solve: x + 10 = 26
Answer: x = 16 -
3. Geometry
Opposite = 5cm, hypotenuse = 7.cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 25:30
Answer: 5:6 -
5. Statistics
Calculate the mean of: 45, 22, 40, 18, 28, 40, 19
Answer: 30.3