Keystones — Lintel
Five GCSE retrieval questions · 19 March 2022 · mathsvault.uk/keystones
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1. Number
Calculate: (-14) + (-22) + (-11)
Answer: -47 -
2. Algebra
Factorise fully: 9x² + 6x
Answer: 3x(3x + 2) -
3. Geometry
Adjacent = 18cm, hypotenuse = 30cm. Find the angle
Answer: 53.1° -
4. Ratio
Simplify: 6:15:15
Answer: 2:5:5 -
5. Statistics
A bag has 3 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 3⁄11