Keystones — Lintel
Five GCSE retrieval questions · 6 January 2024 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 126. What are the numbers?
Answer: 41, 42, and 43 -
2. Algebra
Factorise: 2x² + 8x
Answer: 2x(x + 4) -
3. Geometry
Opposite = 12cm, adjacent = 18cm. Calculate the angle
Answer: 33.7° -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
A bag has 6 red and 7 blue balls. What is the probability of picking a red ball?
Answer: 6⁄13