Keystones — Lintel
Five GCSE retrieval questions · 4 June 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 999 + 778
Answer: 1777 -
2. Algebra
Solve: 4x = 16
Answer: x = 4 -
3. Geometry
Calculate the area of a circle with diameter 9cm
Answer: 63.62cm² -
4. Ratio
Calculate 21.2% of 888
Answer: 188.26 -
5. Statistics
A bag has 4 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 1⁄3