Keystones — Lintel
Five GCSE retrieval questions · 17 July 2023 · mathsvault.uk/keystones
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1. Number
Find the total of 142, 214, and 117
Answer: 473 -
2. Algebra
Factorise fully: 12x² + 21x
Answer: 3x(4x + 7) -
3. Geometry
Adjacent = 22cm, hypotenuse = 42cm. Find the angle
Answer: 58.4° -
4. Ratio
Calculate 48% of 924
Answer: 443.52 -
5. Statistics
A bag has 5 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 5⁄13