Keystones — Cornerstone
Five GCSE retrieval questions · 10 March 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 86 + ? = 113
Answer: 27 -
2. Algebra
Find the next term: 19, 25, 31, 37, ...
Answer: 43 -
3. Geometry
Find the perimeter of a right triangle with sides 6cm and 8cm
Answer: 24cm -
4. Ratio
Calculate 50% of 90
Answer: 45 -
5. Statistics
Find the mean of: 9, 7, 4, 14
Answer: 8.5