Keystones — Lintel
Five GCSE retrieval questions · 5 March 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 997 + 695
Answer: 1692 -
2. Algebra
Factorise fully: 35x² + 15x
Answer: 5x(7x + 3) -
3. Geometry
Opposite = 11cm, adjacent = 18cm. Calculate the angle
Answer: 31.4° -
4. Ratio
Calculate 15.7% of 438
Answer: 68.77 -
5. Statistics
A bag has 6 red and 3 blue balls. What is the probability of picking a red ball?
Answer: 2⁄3