Keystones — Cornerstone
Five GCSE retrieval questions · 15 May 2024 · mathsvault.uk/keystones
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1. Number
What is the missing number: 54 + ? = 170
Answer: 116 -
2. Algebra
Factorise: 8x² + 9x
Answer: x(8x + 9) -
3. Geometry
Find the area of a circle with radius 5cm
Answer: 78.54cm² -
4. Ratio
Simplify the ratio 12:28
Answer: 3:7 -
5. Statistics
Calculate the mean of: 24, 32, 20, 22, 24, 42, 32
Answer: 28