Keystones — Lintel
Five GCSE retrieval questions · 13 June 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 36 + ? = 159
Answer: 123 -
2. Algebra
Find the next term: 1, 2, 4, 7, ...
Answer: 11 -
3. Geometry
Opposite = 11cm, adjacent = 18cm. Calculate the angle
Answer: 31.4° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
A spinner has 3 red, 5 blue and 4 green sections. Probability of landing on red?
Answer: 1⁄4