Keystones — Cornerstone
Five GCSE retrieval questions · 23 June 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 72 + 58
Answer: 72 + 58 = 130 -
2. Algebra
Expand: 3(5x + 7)
Answer: 15x + 21 -
3. Geometry
Opposite = 12cm, adjacent = 14cm. Calculate the angle
Answer: 40.6° -
4. Ratio
Simplify the ratio 4:6
Answer: 2:3 -
5. Statistics
A bag has 4 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2