Keystones — Lintel
Five GCSE retrieval questions · 11 September 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 993 + 857
Answer: 1850 -
2. Algebra
Solve: 3x = 39
Answer: x = 13 -
3. Geometry
Calculate the distance between (3, 6) and (6, 10)
Answer: 5 -
4. Ratio
Calculate 30.2% of 320
Answer: 96.64 -
5. Statistics
A bag has 8 red and 3 blue balls. What is the probability of picking a red ball?
Answer: 8⁄11