Keystones — Lintel
Five GCSE retrieval questions · 16 October 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 993 + 849
Answer: 1842 -
2. Algebra
Factorise fully: 12x² + 14x
Answer: 2x(6x + 7) -
3. Geometry
Find the distance between (1, -4) and (11, 5)
Answer: 13.45 -
4. Ratio
Calculate 13.5% of 321
Answer: 43.34 -
5. Statistics
A bag has 5 red and 3 blue balls. What is the probability of picking a red ball?
Answer: 5⁄8