Keystones — Cornerstone
Five GCSE retrieval questions · 3 April 2024 · mathsvault.uk/keystones
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1. Number
What is the missing number: 45 + ? = 159
Answer: 114 -
2. Algebra
Solve: x + 7 = 15
Answer: x = 8 -
3. Geometry
Calculate the area of a circle with diameter 9cm
Answer: 63.62cm² -
4. Ratio
Simplify: 24:24:16
Answer: 3:3:2 -
5. Statistics
Calculate the mean of: 43, 43, 26, 50, 43, 15, 29, 29
Answer: 34.8