Keystones — Cornerstone
Five GCSE retrieval questions · 17 March 2026 · mathsvault.uk/keystones
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1. Number
Calculate: -2 + 8
Answer: 6 -
2. Algebra
Solve: x + 8 = 27
Answer: x = 19 -
3. Geometry
Opposite = 19cm, adjacent = 13cm. Calculate the angle
Answer: 55.6° -
4. Ratio
Calculate 50% of 174
Answer: 87 -
5. Statistics
Find the mean of: 15, 19, 13
Answer: 15.666666666667