Keystones — Lintel
Five GCSE retrieval questions · 21 May 2026 · mathsvault.uk/keystones
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1. Number Rounding to significant figures
Round 86.116 to 3 significant figures
Answer: 86.1 -
2. Algebra Linear nth term
Find the nth term: 29, 26, 23, 20, ...
Answer: 32 - 3n -
3. Geometry Area using ½ab sin C
Find area of triangle: a = 28cm, b = 24cm, angle = 75°
Answer: 324.6cm² -
4. Ratio Unitary method
10 kg costs £10.00. What is the cost of 17 kg?
Answer: £17.00 -
5. Statistics Mode
Find the mode of: 10, 48, 74, 35, 64
Answer: No mode