Keystones — Cornerstone
Five GCSE retrieval questions · 26 February 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 886 + 524
Answer: 886 + 524 = 1410 -
2. Algebra
Factorise: 30x + 48
Answer: 6(5x + 8) -
3. Geometry
Calculate the perimeter of a right triangle with sides 5cm and 8cm
Answer: 22.4cm -
4. Ratio
Simplify: 15:9:6
Answer: 5:3:2 -
5. Statistics
Calculate the mean of: 19, 34, 19, 47, 40, 42
Answer: 33.5