Keystones — Lintel
Five GCSE retrieval questions · 25 September 2023 · mathsvault.uk/keystones
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1. Number
Calculate: (-16) + (-13) + (-11)
Answer: -40 -
2. Algebra
Factorise: 9x² + 8x
Answer: x(9x + 8) -
3. Geometry
Adjacent = 25cm, hypotenuse = 37cm. Find the angle
Answer: 47.5° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
A bag has 6 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 6⁄11