Keystones — Cornerstone
Five GCSE retrieval questions · 11 November 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 61 + ? = 167
Answer: 106 -
2. Algebra
Solve: 9x = 72
Answer: x = 8 -
3. Geometry
Calculate the area of a circle with diameter 24cm
Answer: 452.39cm² -
4. Ratio
Simplify the ratio 6:21
Answer: 2:7 -
5. Statistics
Calculate the mean of: 45, 13, 44, 47, 47, 42
Answer: 39.7