Keystones — Cornerstone
Five GCSE retrieval questions · 29 June 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 521 + 477
Answer: 521 + 477 = 998 -
2. Algebra
Solve: x + 7 = 10
Answer: x = 3 -
3. Geometry
Opposite = 6cm, hypotenuse = 6.9cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify the ratio 20:16
Answer: 5:4 -
5. Statistics
Find the mean of: 11, 3, 3, 3, 18
Answer: 7.6