Keystones — Cornerstone
Five GCSE retrieval questions · 13 June 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 20 + 81
Answer: 20 + 81 = 101 -
2. Algebra
Solve: 7x = 42
Answer: x = 6 -
3. Geometry
Find the area of a circle with radius 7cm
Answer: 153.94cm² -
4. Ratio
Calculate 25% of 43
Answer: 10.75 -
5. Statistics
A bag has 4 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 4⁄9