Keystones — Lintel
Five GCSE retrieval questions · 29 April 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 991 + 733
Answer: 1724 -
2. Algebra
Solve: 5x = 65
Answer: x = 13 -
3. Geometry
Calculate the area of a circle with diameter 20cm
Answer: 314.16cm² -
4. Ratio
Find 43% of 159
Answer: 68.37 -
5. Statistics
A spinner has 4 red, 2 blue and 2 green sections. Probability of landing on red?
Answer: 1⁄2