Keystones — Lintel
Five GCSE retrieval questions · 22 April 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 111. What are the numbers?
Answer: 36, 37, and 38 -
2. Algebra
Solve: 7x = 77
Answer: x = 11 -
3. Geometry
Opposite = 19cm, adjacent = 13cm. Calculate the angle
Answer: 55.6° -
4. Ratio
Simplify: 8:12:16
Answer: 2:3:4 -
5. Statistics
A spinner has 5 red, 6 blue and 3 green sections. Probability of landing on red?
Answer: 5⁄14