Keystones — Cornerstone
Five GCSE retrieval questions · 11 March 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 51 + 45
Answer: 51 + 45 = 96 -
2. Algebra
Solve: 6x - 11 = 2x + 9
Answer: x = 5 -
3. Geometry
Opposite = 11cm, adjacent = 13cm. Calculate the angle
Answer: 40.2° -
4. Ratio
Calculate 10% of 159
Answer: 15.9 -
5. Statistics
A bag has 6 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 3⁄5