Keystones — Lintel
Five GCSE retrieval questions · 15 March 2024 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 105. What are the numbers?
Answer: 34, 35, and 36 -
2. Algebra
Factorise: 9x² + 7x
Answer: x(9x + 7) -
3. Geometry
Opposite = 17cm, adjacent = 12cm. Calculate the angle
Answer: 54.8° -
4. Ratio
Simplify: 10:8:6
Answer: 5:4:3 -
5. Statistics
A bag has 4 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2