Keystones — Lintel
Five GCSE retrieval questions · 5 October 2026 · mathsvault.uk/keystones
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1. Number Four operations with fractions
Calculate: 4⁄5 + 1⁄3 + 1⁄2
Answer: 49⁄30 -
2. Algebra Inequalities with unknowns on both sides
Solve: 8x + 6 ≤ 7x - 10
Answer: x ≤ 16 -
3. Geometry Speed, distance and time
How long does it take to travel 307km at 78km/h?
Answer: 3.9 hours -
4. Ratio Ratio given the difference
A and B share in ratio 4:1. If the difference is 108, what does A get?
Answer: 144 -
5. Statistics Simple probability
A bag has 8 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 2⁄3