Keystones — Cornerstone
Five GCSE retrieval questions · 7 March 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 63 + 49
Answer: 63 + 49 = 112 -
2. Algebra
Factorise: 3x² + 6x
Answer: 3x(x + 2) -
3. Geometry
Opposite = 5cm, hypotenuse = 10cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 40:35
Answer: 8:7 -
5. Statistics
Calculate the mean of: 42, 44, 46, 11, 40, 10, 13, 37
Answer: 30.4