Keystones — Lintel
Five GCSE retrieval questions · 18 January 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 86 + ? = 105
Answer: 19 -
2. Algebra
Solve: 3x = 27
Answer: x = 9 -
3. Geometry
A circle has area 615.8cm². Find its radius (dp)
Answer: 14cm -
4. Ratio
Simplify: 12:18:15
Answer: 4:6:5 -
5. Statistics
A spinner has 2 red, 3 blue and 4 green sections. Probability of landing on red?
Answer: 2⁄9