Keystones — Cornerstone
Five GCSE retrieval questions · 18 May 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 425 + 223
Answer: 425 + 223 = 648 -
2. Algebra
Factorise: 20x + 25
Answer: 5(4x + 5) -
3. Geometry
Find the perimeter of a right triangle with sides 5cm and 12cm
Answer: 30cm -
4. Ratio
Calculate 10% of 104
Answer: 10.4 -
5. Statistics
Find the range of: 28, 14, 34, 13, 13
Answer: 21