Keystones — Lintel
Five GCSE retrieval questions · 27 September 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 95 + ? = 160
Answer: 65 -
2. Algebra
Collect like terms: 4x + 4y + 4x + 7y
Answer: 8x + 11y -
3. Geometry
A circle has area 530.9cm². Find its radius (dp)
Answer: 13cm -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
A spinner has 5 red, 4 blue and 4 green sections. Probability of landing on red?
Answer: 5⁄13