Keystones — Cornerstone
Five GCSE retrieval questions · 14 December 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 8.1 + 6.5
Answer: 8.1 + 6.5 = 14.6 -
2. Algebra
Solve: x + 8 = 20
Answer: x = 12 -
3. Geometry
Find the area of a circle with radius 6cm
Answer: 113.cm² -
4. Ratio
Simplify the ratio 30:15
Answer: 2:1 -
5. Statistics
Calculate the mean of: 11, 18, 42, 12, 8, 27
Answer: 19.7