Keystones — Cornerstone
Five GCSE retrieval questions · 16 July 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 1 + (13)
Answer: 14 -
2. Algebra
Simplify: 2x + 2x
Answer: 4x -
3. Geometry
Opposite = 6cm, hypotenuse = 6.9cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Calculate 10% of 104
Answer: 10.4 -
5. Statistics
Calculate the mean of: 37, 50, 26, 30, 24, 36, 49
Answer: 36