Keystones — Lintel
Five GCSE retrieval questions · 5 September 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 998 + 605
Answer: 1603 -
2. Algebra
Simplify: 5x - 2x + 7y - 2y
Answer: 3x + 5y -
3. Geometry
Find c if a = 11cm and b = 16cm in a right triangle
Answer: 19.4cm -
4. Ratio
Calculate 28.6% of 376
Answer: 107.54 -
5. Statistics
A spinner has 2 red, 3 blue and 2 green sections. Probability of landing on red?
Answer: 2⁄7