Keystones — Cornerstone
Five GCSE retrieval questions · 8 April 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 60 + 69
Answer: 60 + 69 = 129 -
2. Algebra
For y = x³ + 12, calculate y when x = 3
Answer: y = 39 -
3. Geometry
Calculate the area of a circle with diameter 21cm
Answer: 346.36cm² -
4. Ratio
Simplify: 8:8:6
Answer: 4:4:3 -
5. Statistics
Calculate the mean of: 13, 43, 15, 22, 35, 5, 7, 49
Answer: 23.6