Keystones — Cornerstone
Five GCSE retrieval questions · 28 May 2023 · mathsvault.uk/keystones
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1. Number
Find the total of 114, 195, and 89
Answer: 398 -
2. Algebra
Expand: 5(x + 5)
Answer: 5x + 25 -
3. Geometry
Find the area of a circle with radius 5cm
Answer: 78.54cm² -
4. Ratio
Simplify: 10:8:10
Answer: 5:4:5 -
5. Statistics
Calculate the mean of: 31, 50, 49, 19, 24, 34, 12, 17
Answer: 29.5