Keystones — Lintel
Five GCSE retrieval questions · 20 May 2026 · mathsvault.uk/keystones
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1. Number Rounding to significant figures
Round 9204 to 2 significant figures
Answer: 9200 -
2. Algebra Linear nth term
Determine the nth term rule: -7, -4, -1, 2, 5, ...
Answer: 3n + -10 -
3. Geometry Area using ½ab sin C
Calculate area: sides 10cm and 23cm, included angle 30°
Answer: 57.5cm² -
4. Ratio Unitary method
5 kg costs £28.10. What is the cost of 19 kg?
Answer: £106.78 -
5. Statistics Mode
What are the modes of: 17, 19, 34, 29, 34, 19
Answer: 19 and 34