Keystones — Lintel
Five GCSE retrieval questions · 11 January 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 90. What are the numbers?
Answer: 29, 30, and 31 -
2. Algebra
Factorise fully: 6x² + 4x
Answer: 2x(3x + 2) -
3. Geometry
Opposite = 20cm, adjacent = 19cm. Calculate the angle
Answer: 46.5° -
4. Ratio
Calculate 37.8% of 229
Answer: 86.56 -
5. Statistics
Find the range of: 33, -28, -12, -5, -17
Answer: 61