Keystones — Lintel
Five GCSE retrieval questions · 13 January 2026 · mathsvault.uk/keystones
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1. Number
Find the total of 248, 147, and 51
Answer: 446 -
2. Algebra
For y = x³ + 12, calculate y when x = 2
Answer: y = 20 -
3. Geometry
Find c if a = 16cm and b = 21cm in a right triangle
Answer: 26.4cm -
4. Ratio
Find 50% of 454
Answer: 227 -
5. Statistics
A spinner has 2 red, 6 blue and 4 green sections. Probability of landing on red?
Answer: 1⁄6