Keystones — Cornerstone
Five GCSE retrieval questions · 4 October 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 504 + 889
Answer: 504 + 889 = 1393 -
2. Algebra
Find the next term: 25, 30, 35, 40, ...
Answer: 45 -
3. Geometry
Find the area of a circle with radius 9cm
Answer: 254.47cm² -
4. Ratio
Simplify the ratio 28:32
Answer: 7:8 -
5. Statistics
Find the mean of: 9, 9, 9, 11, 20
Answer: 11.6