Keystones — Cornerstone
Five GCSE retrieval questions · 9 January 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 539 + 643
Answer: 539 + 643 = 1182 -
2. Algebra
Solve: 6x = 60
Answer: x = 10 -
3. Geometry
Opposite = 14cm, hypotenuse = 28cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Calculate 25% of 80
Answer: 20 -
5. Statistics
Find the mean of: 5, 16, 10, 2, 18
Answer: 10.2