Keystones — Lintel
Five GCSE retrieval questions · 3 January 2024 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 114. What are the numbers?
Answer: 37, 38, and 39 -
2. Algebra
Factorise fully: 9x² + 6x
Answer: 3x(3x + 2) -
3. Geometry
Opposite = 10cm, adjacent = 13cm. Calculate the angle
Answer: 37.6° -
4. Ratio
Simplify: 24:16:12
Answer: 6:4:3 -
5. Statistics
A bag has 4 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 1⁄3