Keystones — Cornerstone
Five GCSE retrieval questions · 28 June 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 62 + 20
Answer: 62 + 20 = 82 -
2. Algebra
Solve: 2x = 16
Answer: x = 8 -
3. Geometry
Opposite = 17cm, adjacent = 17cm. Calculate the angle
Answer: 45° -
4. Ratio
Calculate 50% of 22
Answer: 11 -
5. Statistics
Calculate the mean of: 39, 6, 28, 41, 37, 47, 9
Answer: 29.6