Keystones — Lintel
Five GCSE retrieval questions · 5 May 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 63 + ? = 127
Answer: 64 -
2. Algebra
Find the next term: 1, 4, 10, 19, ...
Answer: 31 -
3. Geometry
Calculate the area of a circle with diameter 15cm
Answer: 176.71cm² -
4. Ratio
Find 83% of 167
Answer: 138.61 -
5. Statistics
A spinner has 6 red, 2 blue and 6 green sections. Probability of landing on red?
Answer: 3⁄7