Keystones — Lintel
Five GCSE retrieval questions · 20 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 993 + 817
Answer: 1810 -
2. Algebra
For y = x³ + 11, calculate y when x = 3
Answer: y = 38 -
3. Geometry
Opposite = 19cm, adjacent = 16cm. Calculate the angle
Answer: 49.9° -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
Find the range of: -20, 9, 32, 28, -22
Answer: 54