Keystones — Cornerstone
Five GCSE retrieval questions · 17 December 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 648 + 772
Answer: 648 + 772 = 1420 -
2. Algebra
Factorise: 42x + 30
Answer: 6(7x + 5) -
3. Geometry
Calculate the hypotenuse when a = 10cm and b = 11cm
Answer: 14.87cm -
4. Ratio
Calculate 10% of 70
Answer: 7 -
5. Statistics
Calculate the mean of: 21, 34, 27, 24, 36, 8
Answer: 25