Keystones — Cornerstone
Five GCSE retrieval questions · 19 May 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 387 + 208
Answer: 387 + 208 = 595 -
2. Algebra
Solve: 9x = 36
Answer: x = 4 -
3. Geometry
Opposite = 8cm, adjacent = 13cm. Calculate the angle
Answer: 31.6° -
4. Ratio
Simplify the ratio 9:15
Answer: 3:5 -
5. Statistics
Calculate the mean of: 7, 31, 26, 28, 40, 47
Answer: 29.8