Keystones — Lintel
Five GCSE retrieval questions · 11 March 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 129. What are the numbers?
Answer: 42, 43, and 44 -
2. Algebra
Solve: 9x = 27
Answer: x = 3 -
3. Geometry
Adjacent = 12cm, hypotenuse = 28cm. Find the angle
Answer: 64.6° -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
A spinner has 4 red, 3 blue and 6 green sections. Probability of landing on red?
Answer: 4⁄13