Keystones — Cornerstone
Five GCSE retrieval questions · 28 September 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 3 + 2
Answer: 5 -
2. Algebra
Factorise: 25x + 35
Answer: 5(5x + 7) -
3. Geometry
Find the hypotenuse of a right triangle with sides 5cm and 12cm
Answer: 13cm -
4. Ratio
Simplify: 10:4:12
Answer: 5:2:6 -
5. Statistics
Find the mean of: 8, 3, 5
Answer: 5.3333333333333