Keystones — Cornerstone
Five GCSE retrieval questions · 23 October 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 47 + ? = 114
Answer: 67 -
2. Algebra
Solve: x + 4 = 18
Answer: x = 14 -
3. Geometry
Calculate the area of a circle with diameter 12cm
Answer: 113.cm² -
4. Ratio
Calculate 10% of 80
Answer: 8 -
5. Statistics
Calculate the mean of: 8, 16, 20, 8, 19, 48, 12
Answer: 18.7