Keystones — Cornerstone
Five GCSE retrieval questions · 20 June 2022 · mathsvault.uk/keystones
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1. Number
What is √144?
Answer: 12 -
2. Algebra
Solve: x + 9 = 21
Answer: x = 12 -
3. Geometry
Calculate the area of a circle with diameter 18cm
Answer: 254.47cm² -
4. Ratio
Find 55% of 152
Answer: 83.6 -
5. Statistics
Find the mean of: 3, 4, 3, 15, 20
Answer: 9