Keystones — Lintel
Five GCSE retrieval questions · 1 April 2026 · mathsvault.uk/keystones
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1. Number
What is the missing number: 99 + ? = 159
Answer: 60 -
2. Algebra
Solve: 8x = 40
Answer: x = 5 -
3. Geometry
Calculate the distance between (3, 3) and (6, 7)
Answer: 5 -
4. Ratio
Calculate 33.8% of 793
Answer: 268.03 -
5. Statistics
Find the range of: 10, -19, 29, -7, -21
Answer: 50