Keystones — Cornerstone
Five GCSE retrieval questions · 7 October 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 69 + 24
Answer: 69 + 24 = 93 -
2. Algebra
Factorise: 4x + 10
Answer: 2(2x + 5) -
3. Geometry
Find the hypotenuse of a right triangle with sides 8cm and 15cm
Answer: 17cm -
4. Ratio
Simplify: 4:4:10
Answer: 2:2:5 -
5. Statistics
Calculate the mean of: 23, 36, 16, 10, 6, 50
Answer: 23.5