Keystones — Lintel
Five GCSE retrieval questions · 22 May 2026 · mathsvault.uk/keystones
-
1. Number Rounding to significant figures
Round 7850 to 2 significant figures
Answer: 7900 -
2. Algebra Linear nth term
Find the nth term: 17, 15, 13, 11, ...
Answer: 19 - 2n -
3. Geometry Area using ½ab sin C
Calculate area: sides 16cm and 24cm, included angle 30°
Answer: 96cm² -
4. Ratio Unitary method
9 kg costs £49.50. What is the cost of 20 kg?
Answer: £110.00 -
5. Statistics Mode
Find the mode of: 42, 71, 65, 13, 26
Answer: No mode