Keystones — Cornerstone
Five GCSE retrieval questions · 9 April 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 25 + 47
Answer: 25 + 47 = 72 -
2. Algebra
Simplify: 9x + 9x
Answer: 18x -
3. Geometry
Calculate the area of a circle with diameter 8cm
Answer: 50.27cm² -
4. Ratio
Simplify the ratio 18:15
Answer: 6:5 -
5. Statistics
Calculate the mean of: 33, 9, 34, 9, 14, 24, 50
Answer: 24.7