Keystones — Lintel
Five GCSE retrieval questions · 8 July 2026 · mathsvault.uk/keystones
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1. Number Rounding to significant figures
Round 12.404 to 3 significant figures
Answer: 12.4 -
2. Algebra Linear nth term
Find the nth term: 22, 16, 10, 4, ...
Answer: 28 - 6n -
3. Geometry Area using ½ab sin C
Find area of triangle: a = 12cm, b = 12cm, angle = 51°
Answer: 56cm² -
4. Ratio Unitary method
If 8 items cost £22.10, how many items can you buy for £49.00?
Answer: 17.7 items -
5. Statistics Mode
What are the modes of: 15, 34, 27, 34, 19, 19
Answer: 19 and 34