Keystones — Lintel
Five GCSE retrieval questions · 28 June 2026 · mathsvault.uk/keystones
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1. Number
Add: 7⁄8 + 4⁄7
Answer: 81⁄56 -
2. Algebra
Factorise: 8x² + 4x
Answer: 4x(2x + 1) -
3. Geometry
Opposite = 17cm, adjacent = 12cm. Calculate the angle
Answer: 54.8° -
4. Ratio
Find 64% of 499
Answer: 319.36 -
5. Statistics
A bag has 3 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 3⁄7