Keystones — Lintel
Five GCSE retrieval questions · 10 October 2026 · mathsvault.uk/keystones
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1. Number Four operations with fractions
Subtract: 4⁄6 - 1⁄7
Answer: 11⁄21 -
2. Algebra Inequalities with unknowns on both sides
Solve: 5x + 5 ≤ 4x - 10
Answer: x ≤ 15 -
3. Geometry Speed, distance and time
How long does it take to travel 446km at 71km/h?
Answer: 6.3 hours -
4. Ratio Ratio given the difference
A and B share in ratio 4:3. If the difference is 66, what does A get?
Answer: 264 -
5. Statistics Simple probability
A bag has 8 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 8⁄13