Keystones — Cornerstone
Five GCSE retrieval questions · 12 September 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 178 + 915
Answer: 178 + 915 = 1093 -
2. Algebra
Solve: 7x = 63
Answer: x = 9 -
3. Geometry
Opposite = 8cm, adjacent = 11cm. Calculate the angle
Answer: 36° -
4. Ratio
Simplify the ratio 24:6
Answer: 4:1 -
5. Statistics
Find the mean of: 18, 3, 8
Answer: 9.6666666666667