Keystones — Cornerstone
Five GCSE retrieval questions · 23 September 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 69 + ? = 110
Answer: 41 -
2. Algebra
For y = x³, find y when x = 5
Answer: y = 125 -
3. Geometry
Calculate the hypotenuse when a = 7cm and b = 10cm
Answer: 12.21cm -
4. Ratio
Calculate 25% of 119
Answer: 29.75 -
5. Statistics
Calculate the mean of: 10, 37, 15, 5, 9, 32, 30, 38
Answer: 22