Keystones — Cornerstone
Five GCSE retrieval questions · 13 July 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 69 + 23
Answer: 69 + 23 = 92 -
2. Algebra
Factorise: 20x + 15
Answer: 5(4x + 3) -
3. Geometry
Calculate the hypotenuse when a = 12cm and b = 8cm
Answer: 14.42cm -
4. Ratio
Simplify the ratio 25:30
Answer: 5:6 -
5. Statistics
Find the range of: 34, 43, 27, 16, 46
Answer: 30