Keystones — Cornerstone
Five GCSE retrieval questions · 1 December 2023 · mathsvault.uk/keystones
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1. Number
What is the missing number: 57 + ? = 138
Answer: 81 -
2. Algebra
Find the next term: 12, 21, 30, 39, ...
Answer: 48 -
3. Geometry
Find the area of a circle with radius 7cm
Answer: 153.94cm² -
4. Ratio
Calculate 25% of 140
Answer: 35 -
5. Statistics
Calculate the mean of: 32, 46, 19, 32, 20, 40, 48, 40
Answer: 34.6