Keystones — Cornerstone
Five GCSE retrieval questions · 5 September 2024 · mathsvault.uk/keystones
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1. Number
What is the missing number: 91 + ? = 132
Answer: 41 -
2. Algebra
Factorise: 8x + 14
Answer: 2(4x + 7) -
3. Geometry
Calculate the area of a circle with diameter 21cm
Answer: 346.36cm² -
4. Ratio
Calculate 50% of 128
Answer: 64 -
5. Statistics
Calculate the mean of: 15, 27, 5, 39, 8, 22, 21
Answer: 19.6