Keystones — Cornerstone
Five GCSE retrieval questions · 16 March 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 78 + 55
Answer: 78 + 55 = 133 -
2. Algebra
Expand: 2(5x + 4)
Answer: 10x + 8 -
3. Geometry
Opposite = 16cm, adjacent = 13cm. Calculate the angle
Answer: 50.9° -
4. Ratio
Simplify: 6:6:10
Answer: 3:3:5 -
5. Statistics
Find the mean of: 5, 12, 14, 4, 12
Answer: 9.4