Keystones — Lintel
Five GCSE retrieval questions · 6 July 2026 · mathsvault.uk/keystones
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1. Number Rounding to significant figures
Round 6560 to 2 significant figures
Answer: 6600 -
2. Algebra Linear nth term
Determine the nth term rule: 0, 4, 8, 12, 16, ...
Answer: 4n + -4 -
3. Geometry Area using ½ab sin C
Calculate area: sides 10cm and 14cm, included angle 30°
Answer: 35cm² -
4. Ratio Unitary method
If 6 items cost £27.00, how many items can you buy for £32.70?
Answer: 7.3 items -
5. Statistics Mode
Find the mode of: 70, 58, 30, 44, 19
Answer: No mode