Keystones — Cornerstone
Five GCSE retrieval questions · 24 May 2025 · mathsvault.uk/keystones
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1. Number
Calculate: -1 + (-18)
Answer: -19 -
2. Algebra
What is the next term? 6, 18, 54, 162, ...
Answer: 486 -
3. Geometry
Opposite = 19cm, adjacent = 14cm. Calculate the angle
Answer: 53.6° -
4. Ratio
Simplify: 9:15:15
Answer: 3:5:5 -
5. Statistics
Calculate the mean of: 44, 10, 25, 47, 28, 49
Answer: 33.8