Keystones — Cornerstone
Five GCSE retrieval questions · 12 February 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 61 + 62
Answer: 61 + 62 = 123 -
2. Algebra
Factorise: 2x² + 7x
Answer: x(2x + 7) -
3. Geometry
Find the perimeter of a right triangle with sides 6cm and 8cm
Answer: 24cm -
4. Ratio
Simplify: 8:6:10
Answer: 4:3:5 -
5. Statistics
Calculate the mean of: 13, 25, 25, 46, 25, 36, 17
Answer: 26.7