Keystones — Cornerstone
Five GCSE retrieval questions · 14 November 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 73 + ? = 178
Answer: 105 -
2. Algebra
Simplify: 2x + 8x
Answer: 10x -
3. Geometry
Calculate the area of a circle with diameter 14cm
Answer: 153.94cm² -
4. Ratio
Simplify: 10:6:12
Answer: 5:3:6 -
5. Statistics
Calculate the mean of: 30, 37, 32, 6, 34, 26, 24, 45
Answer: 29.3