Keystones — Lintel
Five GCSE retrieval questions · 21 July 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 84 + ? = 104
Answer: 20 -
2. Algebra
Solve: 8x = 80
Answer: x = 10 -
3. Geometry
Opposite = 9cm, adjacent = 16cm. Calculate the angle
Answer: 29.4° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
Find the range of: 28, 31, -19, -11, 7
Answer: 50