Keystones — Cornerstone
Five GCSE retrieval questions · 3 June 2024 · mathsvault.uk/keystones
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1. Number
Add: 2⁄8 + 2⁄3
Answer: 11⁄12 -
2. Algebra
Factorise: 3x² + 3x
Answer: 3x(x + 1) -
3. Geometry
Find the perimeter of a right triangle with sides 3cm, 4cm, 5cm
Answer: 12cm -
4. Ratio
Find 37% of 157
Answer: 58.09 -
5. Statistics
A bag has 6 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 6⁄11