Keystones — Cornerstone
Five GCSE retrieval questions · 3 May 2024 · mathsvault.uk/keystones
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1. Number
Find the total of 282, 298, and 143
Answer: 723 -
2. Algebra
Factorise: 2x² + 7x
Answer: x(2x + 7) -
3. Geometry
Calculate the distance between (2, 8) and (5, 12)
Answer: 5 -
4. Ratio
Simplify the ratio 9:15
Answer: 3:5 -
5. Statistics
A bag has 5 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2