Keystones — Cornerstone
Five GCSE retrieval questions · 15 February 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 64 + 41
Answer: 64 + 41 = 105 -
2. Algebra
Factorise: 8x + 28
Answer: 4(2x + 7) -
3. Geometry
Find the area of a right triangle with base 4cm and height 8cm
Answer: 16cm² -
4. Ratio
Simplify the ratio 6:9
Answer: 2:3 -
5. Statistics
Find the mean of: 11, 11, 2, 12, 20
Answer: 11.2