Keystones — Lintel
Five GCSE retrieval questions · 2 July 2026 · mathsvault.uk/keystones
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1. Number Four operations with fractions
Calculate: 13⁄15 - 3⁄15 - 2⁄15
Answer: 8⁄15 -
2. Algebra Inequalities with unknowns on both sides
Solve: 9x - 10 > 2x + 46
Answer: x > 8 -
3. Geometry Speed, distance and time
A cyclist travels 299km in 3 hours. What is their average speed?
Answer: 99.666666666667km/h -
4. Ratio Ratio given the difference
In ratio 9:2, the difference between shares is 147. What is the total?
Answer: 231 -
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