Keystones — Lintel
Five GCSE retrieval questions · 18 February 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 132. What are the numbers?
Answer: 43, 44, and 45 -
2. Algebra
Factorise fully: 21x² + 15x
Answer: 3x(7x + 5) -
3. Geometry
Opposite = 11cm, adjacent = 16cm. Calculate the angle
Answer: 34.5° -
4. Ratio
Calculate 36.1% of 899
Answer: 324.54 -
5. Statistics
A spinner has 4 red, 5 blue and 2 green sections. Probability of landing on red?
Answer: 4⁄11