Keystones — Lintel
Five GCSE retrieval questions · 5 February 2026 · mathsvault.uk/keystones
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1. Number Four operations with fractions
Subtract: 6⁄9 - 2⁄4
Answer: 1⁄6 -
2. Algebra Inequalities with unknowns on both sides
Solve: 5x - 10 > 3x + 2
Answer: x > 6 -
3. Geometry Speed, distance and time
How long does it take to travel 462km at 71km/h?
Answer: 6.5 hours -
4. Ratio Ratio given the difference
A and B share in ratio 8:5. If the difference is 66, what does A get?
Answer: 176 -
5. Statistics Simple probability
A bag has 4 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 4⁄9