Keystones — Cornerstone
Five GCSE retrieval questions · 3 March 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 80 + 45
Answer: 80 + 45 = 125 -
2. Algebra
Solve: 7x = 63
Answer: x = 9 -
3. Geometry
Opposite = 9cm, hypotenuse = 18cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 21:9
Answer: 7:3 -
5. Statistics
Calculate the range of: 39, 59, 55, 55, 71, 51
Answer: 32