Keystones — Lintel
Five GCSE retrieval questions · 16 March 2023 · mathsvault.uk/keystones
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1. Number
Find the total of 180, 222, and 52
Answer: 454 -
2. Algebra
Factorise fully: 30x² + 25x
Answer: 5x(6x + 5) -
3. Geometry
Adjacent = 19cm, hypotenuse = 35cm. Find the angle
Answer: 57.1° -
4. Ratio
Simplify: 6:9:15
Answer: 2:3:5 -
5. Statistics
A bag has 6 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 6⁄11