Keystones — Cornerstone
Five GCSE retrieval questions · 26 January 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 1 + (9)
Answer: 10 -
2. Algebra
For y = x³, find y when x = 3
Answer: y = 27 -
3. Geometry
Find the perimeter of a right triangle with sides 3cm and 4cm
Answer: 12cm -
4. Ratio
Simplify the ratio 20:8
Answer: 5:2 -
5. Statistics
Calculate the mean of: 5, 40, 31, 27, 35, 35, 37, 18
Answer: 28.5