Keystones — Lintel
Five GCSE retrieval questions · 31 December 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 999 + 734
Answer: 1733 -
2. Algebra
Factorise: 9x² + 7x
Answer: x(9x + 7) -
3. Geometry
Opposite = 18cm, adjacent = 16cm. Calculate the angle
Answer: 48.4° -
4. Ratio
Find 80% of 341
Answer: 272.8 -
5. Statistics
A bag has 3 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 3⁄11