Keystones — Cornerstone
Five GCSE retrieval questions · 11 April 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 404 + 448
Answer: 404 + 448 = 852 -
2. Algebra
Factorise: 4x² + 4x
Answer: 4x(x + 1) -
3. Geometry
Calculate the hypotenuse when a = 12cm and b = 7cm
Answer: 13.89cm -
4. Ratio
Calculate 10% of 118
Answer: 11.8 -
5. Statistics
Find the mean of: 9, 12, 5
Answer: 8.6666666666667