Keystones — Lintel
Five GCSE retrieval questions · 9 March 2024 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 141. What are the numbers?
Answer: 46, 47, and 48 -
2. Algebra
Factorise fully: 15x² + 35x
Answer: 5x(3x + 7) -
3. Geometry
Adjacent = 21cm, hypotenuse = 40cm. Find the angle
Answer: 58.3° -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
A bag has 3 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 3⁄7